Problem Set 2: The paired-samples t test
Research Scenario: A clinical psychologist is studying the differences in the number of Facebook® friends between identical twins raised apart. She believes that twins raised in different environments will have differences in the number of friends, which would help point to the influence of environmental factors over inherited factors on social outcomes. She divides the twins into two groups (“Twin 1” and “Twin 2”), collects the data and creates the table below.
Using this table, enter the data into a new SPSS data file and run a paired-samples t test to test the claim that the identical twins raised apart will have a different number of Facebook® friends. Create a boxplot to show the difference between the number of friends for each group.
Problem Set 2: The paired-samples t test
Research Scenario: A clinical psychologist is studying the differences in the number of Facebook® friends between identical twins raised apart. She believes that twins raised in different environments will have differences in the number of friends, which would help point to the influence of environmental factors over inherited factors on social outcomes. She divides the twins into two groups (“Twin 1” and “Twin 2”), collects the data and creates the table below.
Using this table, enter the data into a new SPSS data file and run a paired-samples t test to test the claim that the identical twins raised apart will have a different number of Facebook® friends. Create a boxplot to show the difference between the number of friends for each group.
Twin 1
254
64
89
78
89
174
47
207
21
93
136
19
40
212
230
58
Twin 2
198
67
119
43
89
180
61
112
100
87
126
52
56
259
70
29
