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Приложение 4. Проверка гипотезы о равенстве средних значимостей факторов для разных сегментов потребителей.ttest HomeRich == HomeMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- HomeRich | 20 4.25 .2392422 1.069924 3.74926 4.75074 HomeMid | 108 4.148148 .1182651 1.229047 3.913701 4.382595 ---------+-------------------------------------------------------------------- combined | 128 4.164063 .1062615 1.202212 3.95379 4.374335 ---------+-------------------------------------------------------------------- diff | .1018519 .293676 -.4793242 .6830279 ------------------------------------------------------------------------------ diff = mean(HomeRich) - mean(HomeMid) t = 0.3468 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.6353 Pr(|T| > |t|) = 0.7293 Pr(T > t) = 0.3647
. ttest WorkRich == WorkMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- WorkRich | 20 2.6 .3656285 1.63514 1.834731 3.365269 WorkMid | 108 2.740741 .1536283 1.596552 2.436191 3.045291 ---------+-------------------------------------------------------------------- combined | 128 2.71875 .1411503 1.596934 2.439439 2.998061 ---------+-------------------------------------------------------------------- diff | -.1407407 .3900833 -.9127041 .6312226 ------------------------------------------------------------------------------ diff = mean(WorkRich) - mean(WorkMid) t = -0.3608 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.3594 Pr(|T| > |t|) = 0.7189 Pr(T > t) = 0.6406
. ttest PriceRich == PriceMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- PriceR~h | 20 3.8 .2955815 1.321881 3.181341 4.418659 PriceMid | 108 4.046296 .1013787 1.053559 3.845325 4.247268 ---------+-------------------------------------------------------------------- combined | 128 4.007813 .0970125 1.097571 3.815842 4.199783 ---------+-------------------------------------------------------------------- diff | -.2462963 .2673435 -.7753613 .2827687 ------------------------------------------------------------------------------ diff = mean(PriceRich) - mean(PriceMid) t = -0.9213 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.1793 Pr(|T| > |t|) = 0.3587 Pr(T > t) = 0.8207
. ttest CleanRich == CleanMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- CleanR~h | 20 4.5 .2350812 1.051315 4.007969 4.992031 CleanMid | 108 4.574074 .0723005 .7513689 4.430747 4.717401 ---------+-------------------------------------------------------------------- combined | 128 4.5625 .0708063 .8010819 4.422387 4.702613 ---------+-------------------------------------------------------------------- diff | -.0740741 .1956702 -.4612997 .3131516 ------------------------------------------------------------------------------ diff = mean(CleanRich) - mean(CleanMid) t = -0.3786 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.3528 Pr(|T| > |t|) = 0.7056 Pr(T > t) = 0.6472
. ttest LookRich == LookMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- LookRich | 20 3.1 .2039092 .9119095 2.673213 3.526787 LookMid | 108 3.25 .1213779 1.261397 3.009382 3.490618 ---------+-------------------------------------------------------------------- combined | 128 3.226563 .1070904 1.21159 3.01465 3.438475 ---------+-------------------------------------------------------------------- diff | -.15 .2958065 -.7353923 .4353923 ------------------------------------------------------------------------------ diff = mean(LookRich) - mean(LookMid) t = -0.5071 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.3065 Pr(|T| > |t|) = 0.6130 Pr(T > t) = 0.6935
. ttest RecomRich == RecomMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- RecomR~h | 20 2.8 .2127514 .9514532 2.354706 3.245294 RecomMid | 108 2.611111 .1225898 1.273991 2.368091 2.854131 ---------+-------------------------------------------------------------------- combined | 128 2.640625 .1085281 1.227855 2.425868 2.855382 ---------+-------------------------------------------------------------------- diff | .1888889 .2996111 -.4040326 .7818104 ------------------------------------------------------------------------------ diff = mean(RecomRich) - mean(RecomMid) t = 0.6304 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.7352 Pr(|T| > |t|) = 0.5295 Pr(T > t) = 0.2648
. ttest PackedRich == PackedMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- Packed~h | 20 4.3 .2625783 1.174286 3.750417 4.849583 Pac~dMid | 108 4.398148 .0910876 .9466104 4.217578 4.578719 ---------+-------------------------------------------------------------------- combined | 128 4.382813 .0867169 .9810897 4.211215 4.55441 ---------+-------------------------------------------------------------------- diff | -.0981481 .2396152 -.5723397 .3760434 ------------------------------------------------------------------------------ diff = mean(PackedRich) - mean(PackedMid) t = -0.4096 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.3414 Pr(|T| > |t|) = 0.6828 Pr(T > t) = 0.6586
. ttest PoolRich == PoolMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- PoolRich | 20 3.25 .3760949 1.681947 2.462824 4.037176 PoolMid | 108 3.462963 .1479208 1.537238 3.169727 3.756199 ---------+-------------------------------------------------------------------- combined | 128 3.429688 .1375061 1.555704 3.157588 3.701787 ---------+-------------------------------------------------------------------- diff | -.212963 .3797346 -.9644467 .5385207 ------------------------------------------------------------------------------ diff = mean(PoolRich) - mean(PoolMid) t = -0.5608 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.2880 Pr(|T| > |t|) = 0.5759 Pr(T > t) = 0.7120
. ttest SPARich == SPAMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- SPARich | 20 3.45 .3361939 1.503505 2.746338 4.153662 SPAMid | 108 3.611111 .1469862 1.527525 3.319728 3.902494 ---------+-------------------------------------------------------------------- combined | 128 3.585938 .1342664 1.519051 3.320248 3.851627 ---------+-------------------------------------------------------------------- diff | -.1611111 .3709731 -.8952559 .5730337 ------------------------------------------------------------------------------ diff = mean(SPARich) - mean(SPAMid) t = -0.4343 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.3324 Pr(|T| > |t|) = 0.6648 Pr(T > t) = 0.6676
. ttest CoachRich == CoachMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- CoachR~h | 20 3.95 .3118282 1.394538 3.297336 4.602664 CoachMid | 108 4.12037 .1239128 1.287739 3.874728 4.366013 ---------+-------------------------------------------------------------------- combined | 128 4.09375 .1149704 1.300742 3.866244 4.321256 ---------+-------------------------------------------------------------------- diff | -.1703704 .317534 -.7987608 .4580201 ------------------------------------------------------------------------------ diff = mean(CoachRich) - mean(CoachMid) t = -0.5365 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.2963 Pr(|T| > |t|) = 0.5925 Pr(T > t) = 0.7037
. ttest PoliteRich == PoliteMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- Polite~h | 20 4.3 .1933091 .8645047 3.895399 4.704601 Pol~eMid | 108 4.37037 .0878502 .9129657 4.196218 4.544523 ---------+-------------------------------------------------------------------- combined | 128 4.359375 .0797807 .9026154 4.201503 4.517247 ---------+-------------------------------------------------------------------- diff | -.0703704 .2205068 -.5067469 .3660061 ------------------------------------------------------------------------------ diff = mean(PoliteRich) - mean(PoliteMid) t = -0.3191 Ho: diff = 0 degrees of freedom = 126 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.3751 Pr(|T| > |t|) = 0.7502 Pr(T > t) = 0.6249
. ttest HomeMid == HomeLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- HomeMid | 108 4.148148 .1182651 1.229047 3.913701 4.382595 HomeLMid | 111 4.540541 .0903028 .9513988 4.361582 4.719499 ---------+-------------------------------------------------------------------- combined | 219 4.347032 .0751502 1.112122 4.198918 4.495146 ---------+-------------------------------------------------------------------- diff | -.3923924 .148287 -.6846596 -.1001252 ------------------------------------------------------------------------------ diff = mean(HomeMid) - mean(HomeLMid) t = -2.6462 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.0044 Pr(|T| > |t|) = 0.0087 Pr(T > t) = 0.9956
. ttest WorkMid == WorkLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- WorkMid | 108 2.740741 .1536283 1.596552 2.436191 3.045291 WorkLMid | 111 2.711712 .1516426 1.597654 2.411192 3.012232 ---------+-------------------------------------------------------------------- combined | 219 2.726027 .1076794 1.59351 2.513801 2.938253 ---------+-------------------------------------------------------------------- diff | .029029 .2158657 -.3964329 .454491 ------------------------------------------------------------------------------ diff = mean(WorkMid) - mean(WorkLMid) t = 0.1345 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.5534 Pr(|T| > |t|) = 0.8931 Pr(T > t) = 0.4466
. ttest PriceMid == PriceLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- PriceMid | 108 4.046296 .1013787 1.053559 3.845325 4.247268 PriceL~d | 111 4.540541 .0721539 .7601888 4.397548 4.683533 ---------+-------------------------------------------------------------------- combined | 219 4.296804 .0640256 .9474925 4.170615 4.422992 ---------+-------------------------------------------------------------------- diff | -.4942442 .1238954 -.7384366 -.2500519 ------------------------------------------------------------------------------ diff = mean(PriceMid) - mean(PriceLMid) t = -3.9892 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.0000 Pr(|T| > |t|) = 0.0001 Pr(T > t) = 1.0000
. ttest CleanMid == CleanLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- CleanMid | 108 4.574074 .0723005 .7513689 4.430747 4.717401 CleanL~d | 111 4.585586 .064589 .6804874 4.457585 4.713586 ---------+-------------------------------------------------------------------- combined | 219 4.579909 .0482945 .7146937 4.484725 4.675093 ---------+-------------------------------------------------------------------- diff | -.0115115 .0968173 -.2023342 .1793111 ------------------------------------------------------------------------------ diff = mean(CleanMid) - mean(CleanLMid) t = -0.1189 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.4527 Pr(|T| > |t|) = 0.9055 Pr(T > t) = 0.5473
. ttest LookMid == LookLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- LookMid | 108 3.25 .1213779 1.261397 3.009382 3.490618 LookLMid | 111 3.432432 .0901556 .949848 3.253765 3.6111 ---------+-------------------------------------------------------------------- combined | 219 3.342466 .0753853 1.115601 3.193888 3.491043 ---------+-------------------------------------------------------------------- diff | -.1824324 .1506235 -.4793048 .1144399 ------------------------------------------------------------------------------ diff = mean(LookMid) - mean(LookLMid) t = -1.2112 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.1136 Pr(|T| > |t|) = 0.2271 Pr(T > t) = 0.8864
. ttest RecomMid == RecomLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- RecomMid | 108 2.611111 .1225898 1.273991 2.368091 2.854131 RecomL~d | 111 2.720721 .1087274 1.145514 2.505249 2.936193 ---------+-------------------------------------------------------------------- combined | 219 2.666667 .0816992 1.209038 2.505645 2.827688 ---------+-------------------------------------------------------------------- diff | -.1096096 .1636208 -.4320991 .2128799 ------------------------------------------------------------------------------ diff = mean(RecomMid) - mean(RecomLMid) t = -0.6699 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.2518 Pr(|T| > |t|) = 0.5036 Pr(T > t) = 0.7482
. ttest PackedMid == PackedLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- Pac~dMid | 108 4.398148 .0910876 .9466104 4.217578 4.578719 Pac~LMid | 111 4.378378 .0735817 .7752308 4.232557 4.5242 ---------+-------------------------------------------------------------------- combined | 219 4.388128 .0582532 .862068 4.273316 4.502939 ---------+-------------------------------------------------------------------- diff | .0197698 .1167777 -.210394 .2499335 ------------------------------------------------------------------------------ diff = mean(PackedMid) - mean(PackedLMid) t = 0.1693 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.5671 Pr(|T| > |t|) = 0.8657 Pr(T > t) = 0.4329
. ttest PoolMid == PoolLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- PoolMid | 108 3.462963 .1479208 1.537238 3.169727 3.756199 PoolLMid | 111 2.990991 .161126 1.697568 2.671677 3.310305 ---------+-------------------------------------------------------------------- combined | 219 3.223744 .1104142 1.633981 3.006128 3.44136 ---------+-------------------------------------------------------------------- diff | .471972 .2190264 .0402806 .9036633 ------------------------------------------------------------------------------ diff = mean(PoolMid) - mean(PoolLMid) t = 2.1549 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.9839 Pr(|T| > |t|) = 0.0323 Pr(T > t) = 0.0161
. ttest SPAMid == SPALMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- SPAMid | 108 3.611111 .1469862 1.527525 3.319728 3.902494 SPALMid | 111 3.378378 .1492839 1.572803 3.082533 3.674224 ---------+-------------------------------------------------------------------- combined | 219 3.493151 .1048387 1.551471 3.286523 3.699778 ---------+-------------------------------------------------------------------- diff | .2327327 .2095851 -.1803503 .6458158 ------------------------------------------------------------------------------ diff = mean(SPAMid) - mean(SPALMid) t = 1.1104 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.8660 Pr(|T| > |t|) = 0.2680 Pr(T > t) = 0.1340
. ttest CoachMid == CoachLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- CoachMid | 108 4.12037 .1239128 1.287739 3.874728 4.366013 CoachL~d | 111 4.009009 .1148267 1.209775 3.781449 4.236569 ---------+-------------------------------------------------------------------- combined | 219 4.063927 .0842785 1.247208 3.897822 4.230032 ---------+-------------------------------------------------------------------- diff | .1113614 .1687916 -.2213195 .4440422 ------------------------------------------------------------------------------ diff = mean(CoachMid) - mean(CoachLMid) t = 0.6598 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.7449 Pr(|T| > |t|) = 0.5101 Pr(T > t) = 0.2551
. ttest PoliteMid == PoliteLMid, unpaired Two-sample t test with equal variances ------------------------------------------------------------------------------ Variable | Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] ---------+-------------------------------------------------------------------- Pol~eMid | 108 4.37037 .0878502 .9129657 4.196218 4.544523 Pol~LMid | 111 4.432432 .0785011 .8270607 4.276862 4.588003 ---------+-------------------------------------------------------------------- combined | 219 4.401826 .0587241 .8690374 4.286087 4.517566 ---------+-------------------------------------------------------------------- diff | -.0620621 .1176542 -.2939533 .1698291 ------------------------------------------------------------------------------ diff = mean(PoliteMid) - mean(PoliteLMid) t = -0.5275 Ho: diff = 0 degrees of freedom = 217 Ha: diff < 0 Ha: diff != 0 Ha: diff > 0 Pr(T < t) = 0.2992 Pr(|T| > |t|) = 0.5984 Pr(T > t) = 0.7008
Date: 2015-12-11; view: 1398
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