Bài giảng Tin học chuyên ngành dành cho khối B - ĐH Nông nghiệp Hà Nội

Bài giảng Tin học chuyên ngành dành cho khối B - ĐH Nông nghiệp Hà Nội

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CHUOI{G I: CO 56 DI' LIPU

l- Sip x6p vn tim kiaim trong co s& dil li-6u

l.l- Cc sr dii li$u trong Excel

Co- sd dn lipu (CSDL) gdm cric bin ghi (Record), m6i ban ghi tA m6r ddng gdm c6c cgtch?a thOng rin cimg toei, cQr dugc gqi ld trudng lnieia; DOng A-iu c0" *id, C"S;t;il;;;

ten trudng, c:ic ddng k6 tiep sau phai Ia cdc bAn ghi

,, ^ J.1C lill "ta Excel cirg gdm cec c6r va c6c ddng nen #t ti€n d6 chtta mOt CSDL.

yt ,,:l ::,rll:l Tang.tinh.n€n,viec xrl ly' cing rhuin lqi V6i Menu Dat4 c6 rhd x6p thrl tu

um, I9c, tlip cAc bang t6ng ket rat thuan tien

I,2- Sip xip ( Data / Sort)

Khi x6p thri tu m6t danh siich ( CSDL), phdi chgn rirt ca.c6c c0t Danh sdch kh6ns c6

ddng t€n kudng, thi ten c6r sc thay tcn tru*g CO rhd lr:u if,,q" *6tilr;" d-;';il;;il"" "

c0r

^ Tryhg qry dinh crich x6p rhri tu goi Ia khoe C6 th6 dinh toi 3 khod

Lac ban ghi cirng gi6 tri o khorl lhf nh6t duoc xdo thLi tu

theo- + khori thti 2; c ng tr! d khod 2, ttuqc xii tleo khoa i.

C6ch lim : Chon midn / Chon Data / 'Sort, HT c6:

+ Chqn My data has Headers n6u ddng dau ld reh trudng

+,Chon khori thfr nh6t d Sort By, trong Order chgn thriiu

sdp xdp

+ Chon Add Level dd th6m ciic kho6 rhii 2, thrl 3 vi chgn

c6c kh6a 0 Then By

N6u ctgn Case sentitive sfp xiip kh6ng ph6n_ bi€t cht hoa va ch0 rhudng

,O-.,;0y rheo cor chon hudng sip tir tr€n xuiing dudi: Sort top to bottom D0 liCu theoqong chon huong sap lU trdi sang phai: Sort left to right

+ Chgn Options de dinh rht tu cho kho6 diu ti€n, khi d6 c6

' X6p thr? tu nhanh the-o.1 trwdnfi:

C6 cac bGu tuqng #B Ascendiig (tang) E{ Descending (gidm;

^ ?lclrjdi 6_chria giii tri nio d6 crta tr"O-ng ctgn larn khot:bt;jd, tuong xdp thr! tu n6i tr€n ( kh6ng chen 6 chria t6n rrudng ).

I- Sgp x€p theo thf tu cta T6ng di6m giam, Khu vuc tang

2-.Sip.xdp theo thri tq,.,r Kh;',;;;;fi,;b;;_il;#;,"r6ng diiim giim

1.3 -Tim ki6m ( Lgc d* lifu )

Lgnh lgc dnng d6 l6y ra c6c bin ghi thod m6n c6c di6u kiQn d6 cho

Trong c6 2 muc: Filter loc d0 li€u vd Advanced lgc theo tliiu kifn tlinh trudc

I.3.I- Lqc dii liQu ( Data / Fitter )

C6ch lim :

- Chgn miin CSDZ (c6 ddng t€n rrudng)

-Chqn Data / Filter khi d6 6 ten trudng c6 .y_ goi liddu loc

l- Click vio diu lgc ta c6 danh siich:

o Select All: hi€n t6t ce cec bdn ghi

r Cricgi6tri kh6c bi€t cria cQt: c6 thri chon mdrgi6tri naod6d6lo.c c6c bdn ghi

rheo gi6 tri d6

yl,{.1^t1d-*t b*g tti6m d vi dg I trong muc L2 , h6y th.uc hiQn c6c c0ng vifc sau:

t - Lrung t rtter loc ra nhtng ngudi thuQc Khu vus=l vd Edi iuong <7

2- Dirng Filter lgc ra nhitng ngudi thu6c Khu vuc=l f,oi" if,, ,1r1=i vi d6u c6

+ Chon Cdr Khu vyc, chon I

+ Chgn cQt D5i tuong chon Number Filters / is less than c6 hQp tho4i sau:

DATA / Filter c6

Vio mpc Show rows wherc chgn is tess ttran, ro.i O U€n phAi gd vdo 7, chon OK

2- Dr)ng AutoFilter lgc ra nhing ngudi thuQc Khu vgc:l ho{c Khu vyc:3 vi d6u c6

13.2- Lgc theo diiu kign cho trurtc (Data / Advanced )

Crich ldm gdm cilc buoc :

* Dlnh m.idn Diiu kifn(Criteria) nhu sau:

, Dong driu ghi ren trudng, cric ddng ghi didu ki6n IiAn b€n du6i Cric didu ki6n ctng d6ng

ld phep AND khric ddng Ie phip OR

c3gb_nhap diiq-tEI] : Nh6p chti.r sd t,i rri cin tim.

c6 h6p thoai vi khai b6o nhu sau:

+ Dung toilntt so s6nh khi tim trong m6t khoang Vi d! :Mi€n Criteria A57:A58

dd.loc cric bdn ghi vdi

di€u ki€n TR3=100

Mi€n Criteria ,{57:A58

di! loc c6c bnn ghiv6i

A B

5E >300 <=400

Mi€n Criteria A57:858

di! lgc c6c bdn ghi v6i

tli6u ki6n 300 < TR3 < 400 hoac TR3 = 600

* Dlnh mi6n Trich hay midn ghi kdt qui(Extract) nhu sau :

+ DQng i6u ghi ten rudng, m6t s6 ddng trSng liAn b6n du6i

+ N6u chl c6 ddng t€n trudng, moi ddng b€n dudi <tuoc coi li thu6c midn trich vn khi chdp k6t

qud, nhtng 6 kh6ng c6 n6i dung sE b! xod tring.

+ Chon Filter the list, in place n6u mu6n hiQn k6t qui t4i miAn

CSDL.

+ Chgn Copy to another location n6u mui5n hi€n k6t qud tai

miEn trich @xtract)

+ List Range = nian CSDL

+ Criteria Range : miAn diAu ki€n

+ Chgn Copy to = miAn trich n6u mu6n hidn kdt quA tai mirin ,

trich ( neu chon Filter the list, in place thikhdng phdi khai

mqc niy)

+ Chgn Unique recoeds only : c6c b6n ghi nhu nhau chi gi0

lai mQt bin ghi

+ Chgn oK .

*Chrl!:

+ Ndu miEn trich c6 s6 ddng nh6 hon st5 bdn ghi tluo c lgc ra,

s€ c6 thdng b6o ttd chon : chi chilp vta d0 rnien trich hay la

chCp tet ca cac ban ghi loc tluo c

+ Advance cho ph6p tl{t didu kiQn AND vd OR tr€n nhiEu trudng kh6c nhau

Vl dg: Sri dung b6ng-di6m d vi dq I trong mgc 1.2 , hdy thuc hi0n c6c cOng viQc sau:

I - Ding Advanced d6 lgc ra nhiing ngudi d5 cia khu vuc I ( ngudi d6 la ngudi cd t6ng di€m

>= 19.5 )

2- Ding Advanced d6 loc ra nhfrng ngudi c6 di6m To6n >=5 cria khu vgc I hodc khu vuc 2

l- Dhng Advanced tl6 lgc ra nhtng ngudi d6 cria khu vgc I ( ngudi d6 la ngudi c6 t6ng tliiim

>= 19.5 ), kdt qun di5 ngay tai mi6n dr liQu

+TrudctiCn pheit4o miAn Al2: Hl3 ghi c6c di€u kiQn nhu sau:

Ta sao.chdp midn t€n trudng tt Al: Hl vdo mi€n A l2: Hl2,saud6gddi6uki€nvdociic0

+ Chgn mi€n dii li€u Al: H9

+ChgnData/ Advanced c6h6pthoai , r'iii chon c6c mr;c uhusau:

Nhu vAy tru6o khi goi hdm ta phai tao midm didu kiQn trudc.

* Ham DSUM tinh t6ng

DSUM(MiAn co sd dB IiQu, n diiu ki9n.1

* Hdm DMAX tinh gi6 tri ldm nhdt

DMAX(M|6n co sd dn li6u, n diiu kign)

* Hdm DMAX tinh gi6 tri l6n nhit

DMAX(MiAn co sd'd[ li€u, n di€u kifn)

+ Ham DMIN tlnh gi6 tri Itu nhir

DMAX(MiAn co sd dii li€u, n, didu ki6n)

* Hdm DAVERAGE tinh gi6 tri trung binh

DAVERAGE(Mi€n co sd dir li€u, n, ilidu kiQn)

Vi dq 2: Cho bang sti lig, sau,

Trlrdc tien ta t4o midn tti6u ki€n trong D2:D3 { ten ld gao) vi D5:E7 (t€n li Dudng vi giri

>8000 hoac ten la Geo vA gi6 >5000) nhu trong vi du d bang tren

= DSUM(Al:C7, 3, D2:D3) cho k6t qui li 50 (Tdng si5 luqng Glo)

= DMAX(AI:C7, 3, D2:D3) cho kdt qu6 li 40 (Max s6 lucmg Gao)

= DCOUNT(Al:C7, 2, D2:D3) cho ki5t qun ln 2 (D6m mit hing G4q cot tinh phai la cor s6)

= DAVERAGE(A l;C7, 3, D2:D3) cho k6t qui li 25 (trung binh s5 luo ng G4o)

= DSUM(A I :C7, 3, D5:E6) cho kiSt qui Ii l0 (T6ng s5 luong Duong c6 gi6 > 8000)

: DCOUNT(Al:C7,3, D5:E7) cho ktit qun ln 2 (D5m mdt hnng Dudng c6 gi6 > 8000 hoic

Gao c6 gi6 > 5000)

2.2- Tinh to6n theo nh6m s6 li€u: Data/Subtotal

Trong m6t co sd df li€u, ta mu6n thuc hi€n cric t6ng hop s6 li€u theo trng nh6m

Vi du nhu theo don vi, theo mot lo4i v{t tu excel c6 khd n6ng tinh to6n theo nh6m.C6c bu6c ti6n hdnh nhu sau:

a) Sip x6p dft li€u: khod sip x6p ld rrudng ph6n nh6m

Vi dg: Bdng tiAn di6n ( Tinh c6r s6 ding : chi s6 cu6i - chi sii dau,

c6t tidn di€n : s6 dUng * 560 ), hay tinh t6ng tiAn diQn theo rlon vi Nhu v6y trudng ph6n

nh6m ld don vi, dI li6u duoc sip theo trudng don v! tang dAn

b) Chgn Data / Subtotal

,l ,.^ ^

Knt co se xuat nlen hop thoar sau:

C6c muc chgn trong h6p thoai nd.y c6 chtc ndng nhu sau:

+ Trong mUc At each change in: Chgn Don vi (trudng phin nh6m)

+ Trong mUc use function: Chgn Sum (chon ham cin tinh)

+ Trong muc Add subtotal to: Chon trudng Tidn tti€n (chon trudng cin tinh to6n)

+ Chan OK k6t thtc.

Ndu chgn Remove All sC xoe k6t qua tinh duoc

3 - Bimg hai chiiju ( Insert / Fivot Table)

Pivot Table li cdng cu mqnh cia Excel_ VI du c6 CSDL ph6n t6 theo khoa, b6 mOn,

Pivot Table cho phdp tinh ciic hdm thdng k€ don giin thdnh m6t b6ng vdi cdc diu ddng li

khoa, dAu c6t Id b6 m6n Pivot Table c6 ciii khrii ni6m :

Row Labels = Trudng ding d6 ldm nhin cho ddng d b6ng hai chi6u

Column Labels : Trudng dirng d0 ldm nhin cho c6t d bdng hai chidu

Report Filter = Trudng dirng ilii loc dii li€u n6u cAn

Values = 'frudng dC tinh todn.

* Teo PiY.ot Tablc tir mot CSDL

+ Chon mien CSDL

+ Chgn Insert / Pivot Table, xu6t hi€n hOp thoai ctia budc

Butrc I c6 h$p thoai nhu sau:

esr 6 !.s s.r rou r.n! ro !i.t2r

- Chon midn di li€u trong 6 Range

- Chon mUc Exisring Worksheet , trong O location nhap dia ;hi O B6c cao tr6i crla bdlrghai chi€u thi sd hi€n rhi rr€n tren trang tinh ndy( n6u chon New Worksheet dua ra bAngrdng k6r o trang tinh mii; , t -

- K6o trudng truong dnng tl€ l6c di! li6u vao O Report Filter

- K6o trudng trudng dirng dii ldm nh5n cho ddng viro 6 Row Labels

- K6o kudng trudng ding d€ lim nhan cho cot vao O Column Labels

- Kdo trudng truong dung dd rinh toiin vao 6 Values

Thi dq Row Labels ld Khoa, Column Labels ld Bo mon, Values ld So tien linh

+Bem chu6t tr€n ten t rong midn Values, sau d6 chon Value Field Settingsc6 hdp thoaidii chqn ciic hdm tinh toAn, thi du trudng So tien Iinh

Nhip t€n vdo 6 Custom Name.

Chon cach tinh d Summarizevalue field by

Chgn c6ch hi€n dt IiQu d Number Format

): Tinh t6ng tidn linh, ddng theo b6 m6n, cQt theo khoa

) : Tinh t6ng s6 ngudi, ddng theo khoa, cdt theo bd m6n

): j inh iong rien iinh, dong theo b0 m6n, cot theo khoa:

"E

lnsert / Pivot Table c6 cia budc I nhu sau:

Chon Ok sang buo'c 2 nhu sau:

t0

2- Tao bing t6ng k6t: T{nh t6ng ti6n linh, ddng rhed bO m6n, cQt theo khoa

+ Chqn miin A2 : El6

+ Chgn [nsert / Pivot Table cObudcl lfung tu nhu treh

Budc 2 nhu sau:

II

3- Tao bdng tdng kilt : Tinh t6ng sii ngudi, ddng theo khoa, c6t theo b6 m6n

+Chpnmi€nA2:El6

+ Chgn Insert / Pivot Table c6 budc I tuong tu nhu trCn

Budc 2 nhu sau:

4 - In trang tinh

4.1 - Dinh tham s6 in trang tinh ( page Layout / pri t tihes )

c6c m{-rc Page Layout / print tiltes sC c6

t2

Odentation = hudngini portrait= aldng Oeo t6iQng, Iotdb"rpr=;;;g theo ba dei t& giCy

Flt-n

! tases wide by # tall

=liinh cho khit # hang bd r6ng vd # ring b€ cao

* Paper size = Co gi6y

* Print Quality = ch5t luong in

chfm

56 dpi (: dot per inch) cAng k5'n,'hinh cdng min vi in cing

* First page number = Sii trang diu

tiEn

t ) MargiDs

Top = tr€n,Bottom : du6i, Left = tral, Right = phdi

Header = dd,: tang, Footer = cu6i trang '.

Center on Page = Chinh giia trang theo :

Horizontally = chidu ngang, Vertically = chidu doc

c) Header/ Footer :

Chgn cdc miu c6 s5n o fQirder vi Flplqq- kongd6 none - kh6ne.c6

Chgn Custom Header/ Custom Footer rdi nh4p diu, cudi tranltheo m5u ri€ng

d) Sheet

Print Area = midn in, c6 rhia dich dii dinh midn,

Print Titles - Ti€u dd cho cdc trang ti6p sau :

Rows to Repeat at iop = ddng lAm tieu dd phia trCn,

Columns to F-epeat at Left = c6t ldm ti6u tli phia trrii,

Print : Gridlines = lu6i k€ 6, Notes = chi thich,

Draft Quality: in th6,

Black and White = den & tring,

Row and Column Headings = in bd ddng vi bd cdt

Page Order rhr'r trr in :

Dowr,, iher Aircs: = d,"-c rdi ngang

Across lherr Du,rrr - neang rdi dgc

e) Print Previerur (,\eit truoc khi in)

Tii li€u hi6n nhLL s€ in ra r,lLra vio d6 ta c6 th6 b6 xung v€ trinh bdy C6 cric button.:

Next Page / PrevioLrs Iitgr: chur6n trang sau / tru6c

Toom : phr',ng r., rl r n ,,

Print:in

l3

Setup : va dinh deng trang

Margins : hi€n tludng te 16 1cO ttrd ttray rlOiy

Close : vd trang tinh

4.2 - In ( Print )

Chon ntt office bufton ( Gdc

triii cao nhat), chon Print sC

xu6t trifn h6p thoai c6 ciic

muc sau:

* Printer = m6y in :

Name = t€n mriy in ( phdi

tlung t€n mriy in n5i vdi m6y

Selection = midn chon,

Active Sheet(s) = c6c trang

so Ye tlen t6 trong c6c tlon'vi nhu sau:

: Cho bdns sO lieu vC tien thu cia cdc

a'6 Don vi Tidn thu lin I Ti6n thu lAn II

Y€u thgc hiQn c6c c6ng viQcsau:

l- Sip x6p theo rlon vi t6ng dAn, td i6rg din, tiAn thu lin 1 gi6m ddn.

2- Sip xi5p theo 16 gidm din, don vlting d6n, tidn thu lin 2 tang ddn

3- Dirng Auto Filter d6 lgc ra c6c bin ghi thdo mdn:

(doa v! =1.ho{e don vi =5) va (t6 <3)

4- Ding Auto Fiher tl€-lgc ra c6c bin ghi thio mdn : .

(2< don vi <=4) va (t6 <2 hoac t6 =l) vi (ti€n thu lin I >500)

5- Dirng Advaced filter cl6 loc ra c6c bdn ghi thdo mdn:

(tlon vi =l hoic don vi =4) vd ( td <3) vd (500 < ti€n thu l6n 1<600 )

6- Dirng Advaced filter clti lgc ra:

(1< ilon v! <=3 hoic rlon v! =5) vd (to =l hoac t6=3) ve (500 < ti€n thu lin l<600).

7- Dirng ham kong co s0 dfr lieu d6 tinh t6ng tidn thu lin I cria t6 I thuoc don vi 4

8- Dirng hAm trong co sd df, licu dia tinh trung binh tidn thu lin II cna t6 I hoEc td 2 thuoc

don vj 4

9- Dirng him trongcos0dt li€udiid6m xem c6baonhi0u bin ghi cia t6 I thuOc don vi I

hodc 5

l0- Tinh t6ng tiEn thu l6n l, t6ng ti€n thu l6n 2 phdn nh6m theo don v!

1l- Tinh trung binh ti€n thu l6n l, trung binh tiin thu l5n 2 phdn nh6m theo t6

12- Tao birng t6ng ktit hai chidu tinh t6ng tidn thu lin l, ddng theo don vi, cQt theo t6

l3- Tao bdng t6ng kilt hai chi,iu tinh hung binh ti6n thu lin 2, ddng theo t6 , cot theo dcn vi

14- Tao bing t6ng kiit hai chi€u tinh sO ban ghi, ddng theo t6 , c6t theo don v!

15

Bii 2: LQp trang tinh dii thirc hi€n cric tinh ro6n sau

1 B6no nino su t lua thi nshiom

2 SN Ten chrl h6 Hqp tdc xa Gi6no lua Ns 2005 Ns 2006

-t" 10 NgO Tuan c (,rono J 1600 1700

l- Dr)ng him trong co sd d0 li€u trii tinh t6ng Ns 2005 rta giiing r rhu6c hq? tiic x5 A hoic c.

2- Dimg ham hong co sd dt li€u td tini trung blnh Ns 2006 cU-gi6ng 2 holc gi6ng : '

l;

!,t1c him trgne co sd da liQu tti5 d6m xem c6 bao nhi6u ben gii da gi6igj i"i" gia"g z

c6 Ns 2005 >-1300.

+- siip *dp trung il* theo Ns 2006 girim dan, hsp riic xa tang ain, gi6ng idng aan.

5- Dtng Auro Filtar dr3 lgc ra c6c biin ghi rh4o min:

- (H-qp tdc_x6 A holc C) vd (1200<= N, ZOOS .t OOO)

6- Dirng Advaced filter d6 lgc ra cdc bAn ghi thio mani

- (Hop tdc xn < C) vd (Gi5ng I ho6c gi6ng 3 ) vi (1300< Ns 2006 <=l 500)

7- Tinh trung binh Ns 2005, Ns 2006 ptran nhOm rtreo gidng

o 'r!-L.4 rr -^^,

-d- i rnn ior-rg iis Zuiio phan nh6m iheo hgp tdc xa

9- D€m sd ngudi ph6n nh6m theo gi5ng

10.' T4o bdng tong kilt hai chidu tinh ftune binh Ns 2006 ddno rha^ hd- r; v^ ^a, .L-^

'lqw ^a ' lYr ursv

I l- Tao bdng t6ng kdt hai chiAu tinh s6 ngudi, ddng theo gi6ng, c6t theo hqp tdc x6.

l6

CHUONGII CACHAMTH6NGKT

1 C{c hnm th6ng kA (Stutistical Fanctions )

B6m nit &j tr€n ToolBar ( ho{c chgn Formulas / Inserrr Function ) se xudt lien lop

tho4i, d Or Select a category, chgn Statistical, se c6 cec him vA tinh th6ng k€ sau:

FISHER

FISHERINV

FORECASTFREQUENCY

FTESTCAMMADISTCAMMAINVGAMMAI,NGEOMEANGROWTH

MEDIANMIN

MODE

NECBINOMDISTNORMDISTNORMINV

NORMSDIST

NORMSINV

PEARSONPERCENTILE

PERCENTMNKPERMUT

POISSONPROB

QUARTILERANK

RSQSKEWSLOPE

SMALLSTANDARDIZE

Sau tl6y li j nghia mot sd ham rh5ng ke th6ng dqng:

2 Girii thi€u mQt s5 him th6ng kE

2.1 - Cric him AVERAGE, COUNT, MAX, MIN, STDEV, VAR

Cho trung binh cia

Cho ohuone sai cia miln

Cho tri cUa hem I vA phdn b5 xic suit

Cho [61 qui kidm rra 1 vA tinh .loc lip cia 2 dey s5

Cho hf s6 tuong quan giiia 2 day s6D€m s6 lugng ciic 6 c6 rrj ki6u s6 rrong milnDCm s6 luong cec 6 khdng k6ng trcng m ian (Count AII,

Cho hiQp phuong sai (covariance) Cho he s6 Fisher

Cho tln suA ph6n b5 cria cOt s6 (phii c6 miCn ph6n d - Bin range)Cho k€t quri kidm trc Fisher (F-test)

Cho cac tham s6 A, B cna ham h6i quy ruy6n tinh y - Ax +B Cho cdc tham s6 cta hAm h6i quy d?nB m[ y: (Br(Ml " xt )*(M2 " x2)+ )

Cho tri cuc tlai cria mi6nCho tri cuc tiCu cia mi6nCho dti lgch chuinUho ne so student ( 1)

Cho k6t qud kidm tra Srudenr (r-tesr)

AVERAGE Cho trunE biulcua miin

COUNT Dem s6 [rong cac 6 c6 tri ki6u s6 trone miin

MAX Cho tri clrc dai cria mi€n

MIN Cho t{ cuc tiau crla nridn

STDEV Cho dd l6ch chuin

VAR Cho phuLrng sai cria mi6n

t7

* C0 ph6p cda him: TGn_htm(midn dii tiQu;

C6c hdm niy chi co mot diii s6 Ii midn d& li6u n€n c6 thii nh6p truc ti6p

Vt d9 nhAp vdo mOt 0 c6ng th0c: =vAR(C6:C50) cho phuo.ng sai crja cric 0 s6

HEy srl dgng cric him de linh c6c k€ co ban

2.2 Ilim CORREL vi COVAR

Hem CORREL rinh hQ s5 tuong quan giiia 2 ddy s6

Hdm COVAR tinh hiQp phuong sai gita 2 ddy s6

* Cri phrip: T€n_htm(miln d& lipu dty sd l, midn dt [eu dey sd 2 )

so

* C6 thd ding cich khdc:Dich

tdi 6 ghi kdr qua rinh

d Arrayl (mi6n day s6 thti I )

6 Array2(midn ddy s6 ttli Z ;,

+ Chsn OK di5 kiat

thric

Vidg:56 IiQudvidu I,haytinh hgs6tuongquan vdhi0pphuongsai gifia2ddys6xviy.

Hdm ndy cho gi6 tri F c6 ph6n b6 xric xu6t theo quy lu{t Fisher

Vi dg, ph,en tfch su,phdn b6 v6 rhu nh6p d M! vi Canada d6 xem 2 nuoc d6 c6 cirng c10 ph6ntriLn hay khdng

iCri phrlp: .FINV ( nrric_xdc_suit, b4c_tq_dot, bic_tu do2 )

m.uc_xac -suat ld xAc suel gdn voi ph6n b6 Fisher (thLrong =0.05 ha1 0.01)

bqc_tr,r_do I Idb6ctLrdorris6 (the nurnerator degrees-o f lreedom ).

bdc_tu_do2 ldL bdc tu do rnlu s6 lthe denominato-r degrees offreedom).

t8

Vi du : FtNV(0.05,4,12) = 3.25916

2.4 Hirn FREQUENCY

Him ndy,tinh tAn su6t tren day sii, dga rheo mi6n phen t6 (bin range) 116 tlinh.

* T4o mi6n pher i6 (bin range) : Mi6n phari i6 B miAn dinh k[onng ph6n chia dir liQu, t6chric theo cQt.

R ld bi€n tlQ, R = Max - Mia

k ld s6 t6 t= 5* tog(n) tdm rrdn k

hln khoang crigh td, h=R/h lim trdn h : '

- T4o mi6n plan t6 1c6t ninl: Gi6 h! 6 ddu ln xo> min, gi6 tri ti6p theo ld xl= xo+h, , gi6

tricu6i ld xk<Max

;;;;;; ;'O'H; nh6p x0 6 ti6p rheo nhrip'xl, chsn 2 6 xo vd xt sao chdp cho rdi khi g{p

gi6 trixk < Max

C6 the tao mian 8in bang crich khdc nhu sau:

- - Nh{p gi6 tri dilr x0 vdo 0 ddu cta miim

Home / Filffseries khi tl6 sc

- Chon Ok

* Tlnh tin sudt:

- Dua con trd tdi 6 b€n phdi cira x0

- g5m ntit frj I Chon Statistical d Or Select a category / chon FREeUENCy d Select a

iunclion ('hun L)K

l9

K6t qui s€ c6 gi6 tri dAu

ti€n cia dEy tin sudt

- Tinh tin sudr cho cdc 6 cdn lgi: Chon 6 vLa tinh vi c6c 6 cdn lai phla du6i c6 cr)np s6

lusng 6 nhu Bin ranse, s6 F2, ai sr,iri i -cirH J :;r, #;":;:' ,i,."]J,;, ilr"JH,il

-Tinhgidtri b: Chgn2 6 kd nhau theo heng, c6 I , rdi Shift +.Ctrl +J dugccaavAb

Vi dtt: Sii liQu rrong vi du l, dnng hnm tinesr tim.duqc phuong.trinh h6i quf tuyiSn ttnh c6

dang y= 1.40035x+ 0.422't27

Cho gi6 tri t theo phan 66 Student v6i mrlc j nghia vi bac tU do nh6t dinh

Vi dg : =TINV( 0.05, 12 ) cho k6t qun ld 2_.18

2l

'x 2 3 4

Y 23.2 31.4 39.8 50.2 62.9 76 92 to5.7 t22.8 131.7 l5l

Biri t$p chuong 2 Bai I : Cho bang si5 lieu sau:

2- Tinh hQ sri tuong quan,lrifp phuong sai c0a x vd y.

3- Tirn dudng ft6i quy tuy6n tlnh giila y vd x.

4- Tinh tAn su6t cta y.

5- Tlrn gin tri phAn b5 F v6i mrtc nghia 0.05, bac tg do I le I l, bec tu do 2 h 15

6- Tim gi6 hi phen b6 r vdi mrlc nghTa 0.05, b& ti do ln 18

Bii 2: Cho bdng sii lipu sau:

l- Tinh c6c him AVERAGE, COUNT, MAX, MIN, STDEV, VAR cho s6 b6ng, ndng suAt

2- Tinh hQ s6 tuong quan hi€p phuong sai cia s6 b6ns vd nins sudt

3- Tim drdng I6i quy.tuyrin tinh gifa nang su6r vd s6i6ng

-4- Tinh t6n su6t cria sd b6ng

5- Tim gie fii phen b5 F vdi mric nghia 0.05, bac tu do I Ie 23, b4c lu do 2 ld 5

6- Tim gi6 tri phin b6 t vrii mri'c nghia 0.05, bdc tu do lA 25

lo Doflc 184 't 86 188 164 '164 165 166 163 164 165 158 '159 157

Ninq surt 4 4.5 5 4 4.3 3.7 4 1.2 3.9 4.2 4.5 J.D 3.8 4

22

CHITONG UI: CAC TH6NG K6 CC' BAN, TUONG QTIAN VA HOI QI Y

phAn mdm Excet cho nhdp ph6n rich df IiCu n6i chung dii tieu sinh hgc vA n6ng

ndrie? n6i ri€ng, mgt crich k-hri hi€u irua,no"g qu"'r[ ,ir iorf ro"

"r, > Data Aaol,srs

(n€u kh6ng c6 mqc nay thi chon nrit office buir",

" !J *aii"""'nir,, .t nn Excel Options,

chsn Add tas, chon Anatvsis Toollqk yBA A.' .ai aafrrri,ni'Srr"iii ra mer sO cOng cq xri ty

s6 li€u th6ng k€ mdExcel cungcap

l Th6ag k€ m0 ti vir t6 chf,cld

I.l Th6ng k€ m0 tre

fh6ng ke m6 ra cho ohip rinh cric sd dac trLrng m6u/ ciic giii tri th6ng k€ miiu nhu

trung binh, ttQ l€ch chuin sai s6 .huin, urre ,i, ;.i".- t6 il1r;;i;; t;;;';di;ilffi.;;;

hofc theo ddng

a Cic butc thuc hi6n tronq Excel

hdp thoai:

c 9n Data >Data Analysis>Descriptive slalistics' vd klrai b6o cric muc sau trong

- Input range: mi€n d[ li€u k6 cd nhan

- Grouped by: cotrrnn ir6 Iieutn.ocoO ,

- Labels in first row : Erinh d6u { vao 6 nay ndu cO nhdn o ddng tliu.

- Output range: midn ra.

- qum1ary Ctatistics: Denh ddu { n6u mu6n hi€n cric rhi5ng k€ co bin.

- Confidence level for meani SSZof Ao tin

";u.i;;;' "*' *

- K-th largest: I (l Sii ldn nhdt, 2 s6 b, ,r,ii -

K rh smallest: I (l Sd nh6 nhdt, 2 s6 ntro ntri y

Vi dg l: Khao s6t vA cric dAc tinh cua hia ta thu tlugc bdn

cQt s6 lieu: dAj b6ng (cm), p1000

(trgng luqng 1000 hat), s6 b6ng/6 fti nehiem, nang;ai'ii"f ,e,] i;0 b6 tri nhu trong htnh

tint l.lt.ChAn

Data > Data Analysis> Descriptiye Statislcs, sau d6 khai b6o hQp tho4i (xem

Hrnh I.t Bang s6 ti€3EioE lfa vi khai bdo hQp lhoal

23

Ddibon* , I p1000

&rysesGq-&be&i")

Varbtce (trLr:ng siniu) , 0,97

Ket qua thu duoc cho trong hinh I.2 sau ddy:

1, Dr"a- :^L ^t^ tl , -,

u r er o\jrr sd( l{E uu4ln itrr.rn

Mot s0 nhan xdt so bO tren cdc th5ng k€ thu dugc nhu sau:

- Mean cho ta gi6 tri trung blnh cria ddy sd.

- Median cho giri rri tlidrn-giiia cna dav sii

NCU 2 siA tri Mean vi Media-n x{q llritrau ra thi s6 lieu le can d6i Trong vi du I c6cc6r s6 Iieu le can d6i tru cot.\6 b6ng" hoi bi ICch

",, ,., ,-,,:^PI::rii"iT6:,fitdq iecn cnudn m6u cho ra.bi6t d6 ph6n trin cia s6 lifu quanhq,:.rl ,Iulq brnh, ncu c6c giii.tri.ndy cdng nhd chring t6 s5 ligu cang tap rrung Nguii ra tinh

thErn hc s0 bi€n dong (CV) dC kdt luan d-o ph6n tdn c-ria s6 fieu ro fr;

CV= D0 t€ch ctrudrV rrung Utnii, CVodqng "/".- N6rirrilehiern ngoni ddng ruQng

ll'"!).1f:,:?r",.lu s.ti ti€u pnan t6n Neu rhi nshiem i*g pr,org ihi'"ghiem thi cvyo> t0%

l:^r:-.i:q: fii En lheo gili rri c0a CV c6 th6 dirng cric t& dd chi muc?6 i<triic nhau nhu: r6t

r:rp rrung rep - Kurtosis rrung, ruorg tldnh gi6 tusng d6i tap trung, mat r6t dO phan t6n, phan phiii phan hin, tuong cUa day s6 lip'u d6i c6 nhon hon hav phan tiin tu honduung mdt d6 chudn

11c, Ni1 rrons khoans tr -2 diin 2 thi c6 ,ua *r ,a rrdr'ii, _i ,,liail '-"

- skewness d6nh giri.dudng phdn phiSi lech tr6i hay l€ch pfrai N6u rroig U,oang ttr _Zder - riri c6 th€ coi d0 l6,ch xdp xi chudn

Confidence Level'dLroc hiiiu Id nu.a.d6 dii khodng tin c.iy Cii sri Confidencel.:,] :,, I i1' ll"il* j,, :?y.:i 1,le binh rdng thri td, iM;;",_; ]M.un**) rrong vi du

1l, ,1]', !i.;li t" khoans tin cdv e5Yo cita "dii b6ng" tir ( 26.4- o.5s , 26.4 +0.55),-tric li

21

Vi dg 2: Tinh th5ng Lc r:'ri tl il:1, Liri,i lL(rrB igram) coa 16 chuQt c6i tai th&i diiSm cai siianhu sau

Vi d-g 3: Tinh tlr6ng kC m0 tir chr: hinr iuong protein( gam) trong ,l

O0 gam bot mi ciacScmeulhi

* Tqo midn phAn t6 (ein); eidtri canjuo"il0=12,

"a, iic".r::ii, ei6'ii1 uoa"tans t=i.

1.2 Tti chrtc rtd

,Ta chtc dd (nhar d6) ra bidu dd bi€u !i€n tin s6 xudt hi€n ciu 6 rigu trong

"6c khoing crichddu nhau D€ vE t6 chric d6 cAn phrii ti6n henh phen td (nh6m s6 lieui

a Tgo miin phdn t6

- Mi6n phtnt6 Ii miEn ttinh khodng phan chia d0 ti€u, t6 cirfc theo c6t

- Chuin b! cln tinh: Mar, Min, n ld dung luong m6u ta dirng ham count dia tinh

Crich.lim :-0 dAu nhgp x0, 6 tiilp theo nh6p xl, chgn 2 6 xo vA xl, sao chdp cho tdi khi gip

gi6 tri xn > Max

C6 th6 tao mi6n Bin bing uich khiic nhu sau:

- Nhdp gi6 tri ddu x0 vio 6 diu cOa midm

- Chon Home / Fill / series d6 khai b6o c6c muc:

+ Trong mlrc Series in chqn Columns ( d[ lieu theo cot)

+ Trong muc Type chgn Linear ( dt li€u tAng theo cdp s6 cQng)

+Trong Step value: nhap gi6 tri bu6c tang

+ Trong Stop value: nh6p giii tri cu6i