Question
A psychologist would like to evaluate the relationship between verbal skills as measured by a standard test and performance on an anagram task. The task
A psychologist would like to evaluate the relationship between verbal skills as measured by a standard test and performance on an anagram task. The task is to unscramble the letters and identify the word. Psychologist records how much time is needed to complete the task. The anagram times and each subject's vebal test score are as follows.
Verbal Test Score (X) | Anagram Time (Y) |
47 | 104 |
40 | 106 |
59 | 92 |
51 | 98 |
46 | 103 |
57 | 97 |
1). Compute the Pearson correlation for Anagram Time and Verbal test score? (6 points)
2) Is the correlation statistically significant? use a two-tailed test with =0.05. (8 points)
3). Find the regression equation for predicting Anagram time from Verbal test scores. (4 points)
4). If you know a participant's verbal test score is 56, can you use the regression equation to predict his/her Anagram time? If yes, what will it be? If not, why? (3 points)
5).If I know a participant's verbal test score is 38, can you use the regression equation to predict his/her Anagram time? If yes, what it is. If not, why? (3 points)
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