C. The table below shows the frequency table of the exam score of 70 students in a BSIT course (the highest possible score was 100 points). Assume that all scores in an interval are concentrated at the groups' midpoint. Calculate the mean, median, and mode. (9 points overall) Frequency Table of Exam Scores Category Frequency 26-40 41-55 11 56-70 15 71-85 17 86-100 19 D. The table below provides the daily sales of the candy shop Candy-Candy during two particular weeks. a) Using the information of the given table, calculate the mean daily sales for each week. (3 points each) b) Calculate the sample variance and the standard deviation for each week. (3 points each) c) In one complete sentence tell in which week are the data more spread out. (1 point) Candy-Candy Daily Sales Day Week 1 Week 2 Monday 422 299 Tuesday 400 385 Wednesday 410 622 Thursday 375 134 Friday 439 481 Saturday 392 539 Sunday 432 410