Variance and standard deviation

Find the SS, Variance, standard deviation? A professor records the time (in minutes) that it takes 16 students to complete an exam. Compute the 55, the variance, and thestandard deviation assuming the 16 students constitute a population and assuming the 16 students constitute a sample. (Round youranswers for variance and standard deviation to two decimal places.) 46 31 16 5049 41 44 5222 34 43 2735 25 31 42 (a) the 16 students constitute a population55 variancestandard deviation min (b) the 16 students constitute a sample55 variancestandard deviation min