Question

The following summary statistics are known are for a group of 42 students (N): GPA Mean = 3.15, SD = 1.54 Final Exam Mean = 82, SD = 2.36 r = 0.57 Based on this information, is the slope significantly different than 0? How do you know? HTML Editor B I 21 A TE EX Х, 用, box TT T 12pt Paragraph O words

Answer 1

0.05 level,two tail test and n-2= 40 df, critical r from table=0.304

since coefficient of correlation absolute value 0.57 exceeds the critical value 'we can conclude that there is a significant correlation between two variables,

Therefore the slope is significantly different from 0.