In: Statistics and Probability
Question: Did males and females differ in their levels of supporting others?
a. Report the results to answer the question above in context.
ANOVA - SUPPORTING_OTHERS |
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Homogeneity Correction | Cases | Sum of Squares | df | Mean Square | F | p | η² | η² p | ω² | ||||||||||
None | GENDER | 0.660 | 1.000 | 0.660 | 0.055 | 0.815 | 4.469e -4 | 4.469e -4 | 0.000 | ||||||||||
Residuals | 1476.332 | 123.000 | 12.003 | ||||||||||||||||
Welch | GENDER | 0.660 | 1.000 | 0.660 | 0.053 | 0.819 | 4.469e -4 | 4.469e -4 | 0.000 | ||||||||||
Residuals | 1476.332 | 85.355 | 17.296 |
As per the question, we have to test if the males and females differ in their levels of supporitng others. In others words, we can say that, we have to test there is effect of gender on the supporting levels.
In the hypothesis terms, we have to test
H0: there is no difference in supporting levels of males and females (µmale=µfemale).
H1: there is significant difference in supporting levels of males and females (µmale≠µfemale).
Case-1: with no homogeneity correction - the given ANOVA table is
SUPPORTING_OTHERS | |||||||||
Homogeneity Correction | Cases | Sum of Squares | df | Mean Square | F | p | η² | η² p | ω² |
None | GENDER | 0.66 | 1 | 0.66 | 0.055 | 0.815 | 4.469e -4 | 4.469e -4 | 0 |
Residuals | 1476.332 | 123 | 12.003 |
In this case, we have the p-value = 0.815, which is obviously greater than 0.05 and it suggests that we do not have enough evidence against H0 to reject it, so we fail to reject H0 at 0.05 level of significance and we can conclude that there is no difference in supporting levels of males and females.
Case-2: welch homogeneity correction - the given ANOVA table is
SUPPORTING_OTHERS | |||||||||
Homogeneity Correction | Cases | Sum of Squares | df | Mean Square | F | p | η² | η² p | ω² |
Welch | GENDER | 0.66 | 1 | 0.66 | 0.053 | 0.819 | 4.469e -4 | 4.469e -4 | 0 |
Residuals | 1476.332 | 85.355 | 17.296 |
In this case, we have the p-value = 0.819, which is obviously greater than 0.05 and it suggests that we do not have enough evidence against H0 to reject it, so we fail to reject H0 at 0.05 level of significance and we can conclude that there is no difference in supporting levels of males and females.
Finally in both the cases, we fail to reject the null hypothesis and we can conclude that males and females do not differ in their levels of supporting others.