Week 13 Notes - Psychology 211
Week 13 Notes - Psychology 211 Psychology 211
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This 2 page Class Notes was uploaded by Kennedy Patterson on Sunday April 12, 2015. The Class Notes belongs to Psychology 211 at University of Alabama - Tuscaloosa taught by Andre Souza in Spring2015. Since its upload, it has received 105 views. For similar materials see Psychology 211-003 Elem Statistical Methods in Psychlogy at University of Alabama - Tuscaloosa.
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Date Created: 04/12/15
Psychology 211 46154815 Independent Samples ttest Example two recent lines of research have shown that the criteria woman use to evaluate men s attractiveness shift across the menstrual cycle Women prefer masculine faces more on fertile days than on nonfertile days These findings are believed to reflect evolved adaptions for women to choose sires who can provide genetic benefits to offspring To test this hypothesis you asked 10 girls in their fertile phase to rate the attractiveness of male faces 5 of these girls rated male faces with more masculine traces The other 5 rated male faces with less masculine traces Do women in their fertile phase prefer more masculine faces A masculine B less masculine Participant Face Type Rating Anna Masculine 7 Megan Masculine 7 Karla Masculine 5 Patricia Masculine 6 Jordan Masculine 4 Susy Less Masculine 4 Karen Less Masculine 3 Nicole Less Masculine 2 Jen Less Masculine 2 Frances Less Masculine 3 Participant Face Type XA XZA Anna Masculine 7 49 Megan Masculine 7 49 Karla Masculine 5 25 Patricia Masculine 6 36 Jordan Masculine 4 16 ZXA 29 2x2A 175 Mean 22 29 58 A DA g Standard Deviation ZXzl L31 175 1682 13 5A Z Z HA 1 4 Psychology 211 46154815 Independent Samples ttest Participant Face Type XB x23 Anna Less Masculine 4 16 Megan Less Masculine 3 9 Karla Less Masculine 2 4 Patricia Less Masculine 2 4 Jordan Less Masculine 3 9 2x3 14 ZXZB42 Mean 2X3 14 B 2 Z DB 5 2X5 Ln BJ 8 Standard Deviation 58 n 1 8 EA SA 1 3 53 Step 1 0 HO HA H3 0 H1 IJA gt Us Step 2 o 0 level 5 o t critical 186O df n 2 8 n2 because there are 2 different means Step3 Lia X Xquot 58 28 3 V SZM SZET tzA2 B 2 220692434 nA n8 5 57 034 Step 4 o 434 is greater than 1860 so you reject the null hypothesis 0 The mean for the masculine men is more than the mean of the less masculine men
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