The variance is 3.09 and the standard deviation is 9.56. The variance is 9.56 and the standard deviation is 8.50. The variance is 8.50 and the standard deviation is 3.09. The variance is 9.56 and the standard deviation is 3.09. Question 22 O Mark this question The formula for the standard deviation of a sample is: n SE E(x,- X)2 n -1/=1 Select the true statement for the following data set that has a mean of 9: 3, 7, 8, 8, 8, 9, 10, 10, 13, 14 Answer choices are rounded to the hundredths place