Three randomly selected children are surveyed. The ages of the children are 2, 3, and 10. Assume that samples of size n = 2 are randomly selected with replacement from the population of 2, 3, and 10. Listed below are the nine different samples. Complete parts (a) through (d). 2,2 2,3 2,10 3,2 3,3 3,10 10,2 10,3 10,10 a. Find the value of the population variance o². (Round to three decimal places as needed.)

Download the dataset, SummaryStats.xls. Use Excel to calculate the SAMPLE VARIANCE of H. (Round to two decimals.) 399,453,302,468,27,268,165,418,339,154,409,283,31,223,268,393,81,97,84,103,229,3,64,403,118,396,279,93

3. Complete the first 3 columns of the table below. Values Deviations Square deviations X X - X (X-X)² Standard (z) scores X-X Z = a. Compute the sample variance and sample standard deviation by definition. b. Fill in the last column of the table c. Compute the coefficient of variation.

A: 96, 122, 132, 111, 130, 99, 126, 113, 134, 126, 143, 132, 125, 115 B: 2.98, 3.85, 4.44, 4.84, 3.50, 4.87, 4.06, 4.45, 3.87, 4.70, 4.31   Step 1 of 2 :  For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place.