1) Given is the frequency table for the marks scored by the students in a Quiz. Scores Frequency a) Find the modal score 3 5 b) Find the range 4 2 C) Find the median 5 12 d) Find mean, standard deviation and variance 0 7 8 5 6 2) Given are the ages of people attending a wedding ceremony. 2, 13, 45, 30, 45, 23, 45, 67, 33, 34, 55, 45 a) Group these data into classes, all of which has a width of 10. b) Calculate the mean, median, standard deviation and variance of the grouped data in a)3) The given table reflects the number of days employees of a company are absent. Determine the mean, median, standard deviation and variance Days Absence Number of Employees Under 5 5 and under 10 10 and under 15 NJAWN 15 and under 20 20 and under 25 25 and under 30 11