Problem#6. Calculate the mean, variance and standard deviation of the number of children per household in a region. Use the below data as population. (1 point for mean, 2 points for table, 1 point for variance and 1 point for standard deviation) \fProblem#7. Calculate the mean, variance and standard deviation of the following frequency distribution. Use the below data as population. (1 point for mean, 2 points for table, 1 point for variance and 1 point for standard deviation) Frequency f 100-199 200-299 300-399 400-499 500-599 \fPlease round off your nal answer (only) to two digits for mean, variance and standard deviation in problem# 5, problem#6 and problem#7. Problem#5. Calculate the mean, variance and standard deviation of final exam scores given below of some students in MAT150.5course? Use the below data as population. (1 point for mean, 2 points for table, 1 point for variance and 1 point for standard deviation) 90 85 74 91 89 66