Find correlation when SD and mean are given


New Member
A guy got 88 in his test which has mean score of 64 with SD 8. He missed the second exam in which the meanscore was 45 and SD was 5. He got a prorated marks of 55. The prof used regression to get his second test marks. What was the corelation between 2 exams ?

P.S: I would really appreciate if it has been broken down answer in detail.


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