1 Kim nh gi thuyt v trung bnh tng th S dng SPSS: Vi file d liu DLnhanvien T d liu thu thp c, s dng SPSS kim nh gi thuyt cho rng mc lng bnh qun hng nm l 35.000 la. B1. Gi thuyt v i thit:H0: mc lng bnh qun hng nm l 35.000 ( = 35.000$)H1: mc lng bnh qun hng nm t hn 35.000 ( 35.000$) B2. Phng php kim nh: K gi thuyt v trung binh ca tng th B3. Xc nh mc ngha: chn o =0,05 B4. S dng d liu thu thp c tnh tiu chun kim nh t hoc P-vlue bng SPSS 2 Kim nh gi thuyt v trung bnh tng th S dng SPSS:B4. Nhp Analyze Compare Means One sample T test. abincnphntchvoTestVariable(s),tgi tr 0(35000) vo Test Value. Nhp Option xc nh tin cy NhpContinue,hpthoiOneSampleTTesttrv, nhp OK3 Kim nh gi thuyt v trung bnh tng th S dng SPSS Kt qu: T-Test One-Sample Statistics474 $34420 $17,075.661 $784.311l uong hi en nayN Mean Std. Devi ati onStd. ErrorMeanOne-Sample Test-.740 473 .460 -$580.432 -$2,121.60 $960.73 l uong hi en nayt df Si g. (2-tai l ed)MeanDi fference Lower Upper95% Confi denceIntervalof theDi fferenceTest Val ue = 35000Gi tr PGi trtGii hn di ca gi tr c lng Gii hn trn ca gi tr c lng 4 Kim nh gi thuyt v trung bnh tng th S dng SPSS:B5. Bc b hay chp nhn gi thuyt khng: V gi tr P=0,460 > o =0,05 nn khng c c s bc b gi thuyt khng. Kt lun: Nhn nh v chi tiu bnh qun cho xem phim hng thng ca mi ngi l 35000$ l ng vi mc ngha 5%. 5 Kim nh s khc nhau trung bnh hai tng th: mu c lp S dng SPSS S dng d liu thu thp c File DLnhanvien, kim nh gi thuyt cho rng mc lng bnh qun ca nam v n l bng nhau. Gi thuyt v i thuytH0: m= fv H1: m= f Tnh tiu chun kim nh t hoc P-vlue c tnh bng SPSS t d liu thu thp bng cch: 6 Kim nh s khc nhau trung bnh hai tng th: mu c lp S dng SPSS Chn Analyze Compare Means Independent sample t-test. abinluonghientaivoTestVariablesvbingioitinhvo Grouping Variable Nhp Define Groups nh xc nh cc nhm ca bin gioitinh Nhp Continue Define Groups v OK One independent Sample T-Test 7 Kim nh s khc nhau trung bnh hai tng th: mu c lp Kt qu Group Statistics258 $41442 $19,499.214 $1,213.968216 $26032 $7,558.021 $514.258gi oiti nhnamnul uonghi en nayN Mean Std. Devi ationStd. ErrorMeanIndependent Samples Test119.669 .000 10.945 472 .000 $15409.86 $1,407.906 $12643 $1817611.688 344.262 .000 $15409.86 $1,318.400 $12817 $18003EqualvariancesassumedEqualvariancesnot assumedl uonghi ennayF Si g.Levene's Testfor Equal i ty ofVari ancest dfSi g.(2-tai l ed)MeanDi fferenceStd. ErrorDi fference Lower Upper95% Confi denceIntervalof theDi fferencet-test for Equal i ty of MeansTrc ht xem kq kim nh bng nhau ca phng sai chn t no (s dng test Levens) Gi tr t-Student P-value 8 Kim nh gi thuyt v trung bnh tng th S dng SPSS: Cn c kt qu bc b hay chp nhn gi thuyt khng: Trc ht phi kim nh bng nhau ca cc phng sai bng test Levenes (thng k F) bng cch to lp cc gi thuyt: H0: ox2 = oy2 vH1: ox2 = oy2

Cn c vo kt qu test phng sai bng nhau, xc nh gi tr t a ra kt lun v bng nhau ca trung bnh Nu phng sai bng nhau, s dng gi tr t dng trn Nu phng sai khng bng nhau, s dng gi tr t dng di v d trn: Kim nh phng sai bng nhau cho thy H0: ox2 = oy2 b bc b v P= 0,000< o =0,05 nn ly gi tr t dng di Kim nh bng nhau ca trung bnh cho thy v gi tr P=0,000 < o/2 =0,025 nn bc b gi thuyt khng. Kt lun: Nhn nh cho rng mc lng trung bnh ca nam v n bng nhau l khng ng vi mc ngha 0,05. 9 Kim nh s khc nhau trung bnh hai tng th: mu ph thuc (xp cp) S dng SPSS M File d liu Quang cao, kim nh gi thuyt cho rng bnh qun doanh s trc v sau qung co l nh nhau vi mc ngha 0,05 GithuytH0:Doanhssauchindchkhuynmikhngcaohntrcchin dch khuyn mi Gi thuyt i H1: Doanh s sau chin dch khuyn mi cao hn trc chin dch khuyn mi Nhn Analyze Compare Means Paired sample t-test. a bin cn phn tch vo Paired Variables Nhp Option xc nh mc ngha 10 Kim nh s khc nhau trung bnh hai tng th: mu ph thuc (xp cp) Kt qu Paired Samples Statistics42.93 15 27.680 7.14741.53 15 29.942 7.731D.so sau QCD.so truoc QCPair1Mean N Std. Devi ationStd. ErrorMeanPaired Samples Test1.400 5.680 1.466 -1.745 4.545 .955 14 .356D.so sau QC -D.so truoc QCPair1MeanStd.Devi ati onStd.ErrorMean Lower Upper95% Confi denceIntervalof theDi fferencePaired Di fferencest dfSi g.(2-tai l ed)Trung bnh khc bit Gi trt-student P-value 11 Kim nh s khc nhau trung bnh hai tng th: mu ph thuc (xp cp) Cn c kt qu bc b hay chp nhn gi thuyt khng: Cn c vo d liu mu ta thy doanh s trung bnh sau qung co (42,93$) l cao hn doanh s trung bnh trc qung co (41,53$) Nhng v P= 0,356 >o =0,05 nn khng c c s bc b gi thuyt khng. Kt lun: Nhn nh cho rng doanh s trung bnh sau chin dch qung co cao hn trc chin dch qung co l khng ng vi mc ngha 0,05. 12 PHN TCH ANOVA S dng SPSS MFiledliuchienluocMR,kimnhgithuytcho rngdoanhsbnhqunvi4chinlcMARKETING khc nhaupdng cho4thnhphlkhng khc nhau vi mc ngha 0,05 GithuytH0:doanhsbnhqunvi4chinlc MARKETINGkhcnhaupdngcho4thnhphl khng khc nhau 1= 2 = 3= 4 Gi thuyt i H1: t nht doanh s bnh qun mt thnh ph khc vi cc thnh ph khc 13 PHN TCH ANOVA iu kin Cc mu l c lp tc nhng phn t thuc mt nhm ny th khng thuc cc nhm khc Phng sai cc bin ph thuc l bng nhau trong mi tng th Bin ph thuc phn phi chun trong mi tng th 14 PHN TCH ANOVA Nhp Analyse Compare Means One-Way ANOVA a bin ph thuc doanhso vo Dependent List v bin c lp thanhpho vo Factor 15 PHN TCH ANOVA Nhp Post Hoc( xc nh c th nhng nhm c trung bnh bng nhau) Compare Means One-Way ANOVA- Continue Trong trng hp phng sai khng bng nhau chn Tamhanes 16 PHN TCH ANOVA Tr li ca s One-Way ANOVA Nhp Option Descriptive v Homogeneity of variance Continue (Mun c th minh ho, ca s Option chn Means Plot) Nhp OK ca s One-Way ANOVA 17 PHN TCH ANOVA Kt qu DescriptivesDoanh so ban hang15 1320.00 26.926 6.952 1305.09 1334.91 1280 136015 1255.00 41.576 10.735 1231.98 1278.02 1190 132015 1379.13 38.709 9.995 1357.70 1400.57 1315 143015 1403.23 28.320 7.312 1387.55 1418.92 1350 143860 1339.34 66.874 8.633 1322.07 1356.62 1190 1438HanoiHochi mi nhDanangHaiphongTotalN MeanStd.Devi ati onStd.ErrorLowerBoundUpperBound95% Confi denceIntervalfor MeanMini mum MaximumGi tr trung bnh cc nhm theo mu Test of Homogeneity of VariancesDoanh so ban hang1.793 3 56 .159LeveneStati sti c df1 df2 Si g.Gi tr p-value ca K Levene v bng nhau ca cc phng sai 18 PHN TCH ANOVA Kt qu ANOVADoanh so ban hang197297.1 3 65765.693 55.335 .00066556.167 56 1188.503263853.2 59Between GroupsWithi n GroupsTotalSum ofSquares dfMeanSquare F Si g.Gi tr p-value ca F v bng nhau ca cc trung bnh Doanh so ban hangScheffea15 1255.0015 1320.0015 1379.1315 1403.231.000 1.000 .310Thanh phoHochi mi nhHanoiDanangHaiphongSi g.N 1 2 3Subset for alpha = .05Means for groups i n homogeneous subsets are di splayed.Uses Harmoni c Mean Sampl e Si ze = 15.000.a. Gi tr v bng nhau ca cc trung bnh 19 PHN TCH ANOVA Kt qu Cn c kt qu bc b hay chp nhn gi thuyt khng: Trc ht phi kim nh bng nhau ca cc phng sai bng test Levenes (thng k F) bng cch to lp cc gi thuyt: H0: o12 = o22= o32 = o42 vH1: t nht c mt o2 = o2 khc Kim nh phng sai bng nhau cho thy H0: H0: o12 = o22= o32 = o42 c chp nhn v P= 0,159 > 0,05 Kim nh bng nhau ca cc trung bnh cho thy v gi tr P=0,000 < o =0,025 nn bc b gi thuyt khng. Kt lun: Doanh s trung bnh ca cc chin dch marketing cc thnh ph khc nhau l khc nhau vi mc ngha 0,05. Cn c vo kim nh Scheffe: Ch doanh s trung bnh nng & Hi phng l nh nhau 20 PHN TCH HI QUI T v d v phn tch hi qui xy dng File d liu dthu-QC v thit lp m hnh hi quy tuyn tnh Y = b0+ b1X gia doanh thu v chi ph QC Phc ho th ch ra quan h tuyn tnh tn ti gia hai bin Nhp Graphs Interactive Scatterplot a bin ph thuc Doanhso vo trc tung & bin c lp ChiphiQC vo trc hanh(mn hnh bn) Sau chn Fit chn Regression nh hnh sau: 21 PHN TCH HI QUI Cui cng nhp OK c kt qu nh sau 22 PHN TCH HI QUI Linear Regression30 40 50 60 70Chi phi cho quang cao50075010001250Doanh soDoanhso = 240. 81+ 14. 72 * Chiphi QCR-Square =0. 8023 PHN TCH HI QUI Thc hin phn tch hi quy Nhp Analyze Regression- linear a bin ph thuc Doanhso v Dependent v bin c lp chiphiQC vo Independent(s). Nhp Statistic 24 PHN TCH HI QUI S dng SPSS: Thc hin phn tch hi quy Trong ca s Linear Regression Statistic chn nh trong hnh v nhp Continue Tr v ca s Linear Regression nhp Plot 25 PHN TCH HI QUI S dng SPSS: Thc hin phn tch hi quy Trong ca s Linear Regression Plot chn Histogram v normal Probability Plot v nhp Continue Tr v ca s Linear Regression nhp OK 26 PHN TCH HI QUI Kt qu Model Summaryb.896a.803 .792 97.640 1.353Model1R R SquareAdjustedR SquareStd. Error ofthe Esti mateDurbi n-WatsonPredi ctors: (Constant), Chittieu cho quang caoa. Dependent Vari abl e: Doanh sob. ANOVAb700249.5 1 700249.513 73.389 .000a171748.2 18 9541.569871997.7 19Regressi onResi dualTotalModel1Sum ofSquares df Mean Square F Si g.Predi ctors: (Constant), Chiphicho quang caoa. Dependent Vari abl e: Doanh sob. H s R2 biu th % phng sai doanh s c gii thch bi m hnh hi qui Gi tr thng k F kim nh s tn ti ca m hnh trong tng th Gi tr P 27 PHN TCH HI QUI Kt qu Coefficientsa240.809 73.414 3.280 .004 86.572 395.04614.717 1.718 .896 8.567 .000 11.108 18.326 1.000 1.000(Constant)Chi phichoquang caoModel1BStd.ErrorUnstandardi zedCoeffi ci entsBetaStandardi zedCoeffi ci entst Si g.LowerBoundUpperBound95% Confi denceIntervalfor BTolerance VIFColl i neari tyStati sti csDependent Vari abl e: Doanh soa. H s b0 H s b1 Hm hi qui c xc nh t mu l: Y=40,809 + 14,717X Trong : Y l doanh s X l chi ph cho qung co 28 PHN TCH HI QUI Kt qu M hnh hi qui c tn ti trong tng th khng: Gi thuyt H0: M hnh hi qui khng tn ti trong tng th H1: M hnh hi qui tn ti trong tng th nghin cu Cn c gi tr P ca tiu chun kim nh F chng ta c P=0,000 < o=0,05 nn chng ta bc b gi thuyt H0 tc m hnh Y=40,809 + 14,717X l c gi tr trong tng th 80,3% doanh s c gii thch bi chi ph qung co 29 PHN TCH HI QUI Casewise Diagnosticsa-.330 1121 1153.24 -32.244.103 766 755.89 10.107-.713 701 770.61 -69.610.037 1304 1300.41 3.589-.125 832 844.19 -12.193-.335 782 814.76 -32.760.154 977 961.93 15.073-1.082 503 608.73 -105.726-.739 772 844.19 -72.193.248 839 814.76 24.2401.404 893 755.89 137.107-.514 588 638.16 -50.160-.954 957 1050.23 -93.227-.993 703 800.04 -97.043-.993 497 594.01 -97.010.042 657 652.88 4.1241.927 1209 1020.79 188.206-.545 997 1050.23 -53.2271.203 844 726.46 117.5402.205 883 667.59 215.407Case Number1234567891011121314151617181920Std. Resi dual Doanh soPredi ctedValue Resi dualDependent Vari abl e: Doanh soa. YY YY30 KIM NH PHI THAM S Kim nh v mi quan h c lp hai bin- S dng SPSS Trong file DLnhanvien chng ta kim nh xem tin lng hin ti c khc nhau theo gii tnh khng. H0: Tin lng hin ti khng ph thuc vo gii tnh H1: Tin lng hin ti ph thuc vo gii tnh V tin lng hin ti l bin t l nn thc hin c kim nh ny phi m ha li Bin luonghientai t l c m ha li thnh bin luongrecode th t31 KIM NH PHI THAM S Kim nh v mi quan h c lp hai bin- S dng SPSS Nhp Analyse - Descriptives statistics Crosstab ri a cc bin chn vo cc tng ng32 KIM NH PHI THAM S Kim nh v mi quan h c lp- S dng SPSS Nhp statistics thit lp cc thng k cn thit 33 KIM NH PHI THAM S Kim nh v mi quan h c lp- S dng SPSS Nhp Continue Celle xc nh cc kt qu mun xc nh trong bng cho Nhp Continue- OK 34 KIM NH PHI THAM S Kim nh v mi quan h c lp - Kt qu: Muc luong hien tai recod * gioi tinh Crosstabulation0 45 4520.5 24.5 45.0.0% 17.4% 9.5%40 126 16675.6 90.4 166.018.5% 48.8% 35.0%176 87 263119.8 143.2 263.081.5% 33.7% 55.5%216 258 474216.0 258.0 474.0100.0% 100.0% 100.0%CountExpected Count% wi thi n gi oiti nhCountExpected Count% wi thi n gi oiti nhCountExpected Count% wi thi n gi oiti nhCountExpected Count% wi thi n gi oiti nhcaoTbinhthapMuc l uonghi en tairecodTotalnu namgi oiti nhTotal35 KIM NH PHI THAM S Kim nh v mi quan h c lp- Kt qu: Chi-Square Tests116.868a2 .000136.176 2 .000474Pearson Chi -SquareLi kel i hood Rati oN of Val id CasesValue dfAsymp. Si g.(2-si ded)0 cell s (.0%) have expected count l ess than 5. Themini mum expected count i s 20.51.a. Gi tr chi bnh phng P- valueSymmetric Measures.497 .000.497 .000474PhiCramer's VNomi nalbyNomi nalN of Val id CasesValue Approx. Si g.Not assumi ng the nul lhypothesi s.a. Usi ng the asymptoti c standard error assumi ng the nul lhypothesi s.b. H s o lng mi quan h tn sut mong i tt c cc u ln hn 5 36 KIM NH PHI THAM S Kim nh v mi quan h c lp - o lng cng mi quan h: H s Cramers V o lng cng mi quan h gia hai bin Vi k l min(r,c) V>0,70 : quan h rt mnh 0,50sV s0,69 : quan h mnh 0,30sV s0,49 : quan h trung bnh 0,10sV s0,29 : quan h yu 0,01sV s0,09 : quan h rt yu V=0,00 : khng c mi quan h Khi bng cho l 2 x 2, ngi ta s dng h s Phi t dng h s C ) 1 (2=k nV_n2_| =37 KIM NH PHI THAM S Kt qu Cn c kt qu bc b hay chp nhn gi thuyt khng: Trc ht xem xt iu kin tn sut mong i tt c cc c ln hn 5 l tha mn Kim nh chi bnh phng cho thy v gi tr P=0,000 < o =0,05 nn bc b gi thuyt khng. Kt lun: Mc lng bnh qun hin ti l khc nhau vi mc ngha 0,05. Mi quan h ph thuc ny l kh mnh v V=0,497