View the step-by-step solution to:

# plz show all the work and calculation step by step plzzz.

plz show all the work and calculation step by step plzzz..

1. As we have noted in previous chapter even a very small effect can be significant if the sample is large enough for each of the following determine how large a sample is necessary for the correlation to be significant. Assume a two-tailed test with a=.05. (Note: because the table doesn’t list every possible df value, you can’t determine every possible sample size. In each case use the sample size corresponding to the appropriate df value in the table)
a) a correlation of r=0.40
b) a correlation of r=0.30
c) a correlation of r=0.20

2. The following data consist of numerical scores measured on an interval scale of measurement. Convert the scores to ranks and compute the Spearman correlation
----------------------
X Y
-------------
0 15
2 10
6 5
10 2
3 12

XY
------------0 15
2 10
65
10 2
3 12 x y
0
2
6
10
3 Rank (X)
15
10
5
2
12 Rank (Y)
1
2
4
5
3 5
3
4
5
2 diff of rank squre
-4
-1
0
0
1
∑d^2 rank correlation coefficient 16 Spearman's rank...

### Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

### -

Educational Resources
• ### -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents