Using the following datasets

X - X = X - X = (X - X )2

4

6

10

6

9

7

X - X = X - X = (X - X )2

77

55

86

82

79

60

48

59

58

76

1. What is the sum of squares for each of the data sets above?

2. What are the sample variance and sample standard deviation for each of the data sets above?

3. What are the estimated population variance and estimated population standard deviation for each of the data sets above?

4. Which type of variability provides an unbiased measure for the data sets above?