Struggling with statistics problems. They were assigned but not yet explained.

Question

Find each value represented for the distribution of scores in the following table.

a. n

b. ∑X

c. ∑X²

 

X     f

5     1

4     2

3     3

2     5

1     3

Answer 1

Assigned but not explained?  Either wait for explanations, or consult your textbook or other equivalent course materials.

 

n is the sum of all the frequencies.  ∑X is the sum of all the X values.   ∑X² is the sum of all the squares of the X values, i.e. 25 + 16 + 9 + 4 + 1 = 55