What is the value of SS (sum of squared deviations) for the following sample? Sample: 1, 3, 2, 2 ...

What is the value of SS (sum of squared deviations) for the following sample? Sample: 1, 3, 2, 2
 
  a. 0.50 c. 4
  b. 2 d. 18

Question 2

Under what circumstances is the computational formula preferred over the definitional formula when computing SS, the sum of the squared deviations, for a sample?
 
  a. When the sample mean is a whole number
  b. When the sample mean is not a whole number
  c. When the sample variance is a whole number
  d. When the sample variance is not a whole number

Question 3

A population of N = 10 scores has a standard deviation of  = 2 . What is the value of SS, the sum of the squared deviations, for this population?
 
  a. 40 c. 4
  b. 20 d. 2

Question 4

What is the variance for the following population of scores? Scores: 5, 2, 5, 4
 
  a. 6 c. 1.5
  b. 2 d. 1.22