Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05.
0.843, n = 5
O Critical values: r = 0.950, significant linear correlation
O Critical values: r==0.878, no significant linear correlation
O Critical values: I = =0.878, significant linear correlation (my answer)
O Critical values: r = =0.950, no significant linear correlation
2. Find the value of the linear correlation coefficient r.
Managers rate employees based on job performance and attitude. The results for several
randomly selected employees are given below.
Performance 59 63 65 69 58 77 76 69 70 64
Attitude 72 67 78 82 75 87 92 83 87 78
O 0.610
O 0.863(my answer)
O 0.729
O 0.916
3. Find the value of the linear correlation coefficient r.
The paired data below consist of the test scores of 6 randomly selected students and the
number of hours they studied for the test.
Hours 5 10 4 6 10 9
Score 64 86 69 86 59 87
O 0.678
O -0.678
O. 0.224 (my answer)
O -0.224
1 answer
1 answer