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Frequency Distribution 1- The grades of a student on nine 100-point examinations were 76, 70, 65, 69, 85, 94, 62, 79, and 100. Find the Arithmetic Mean- Mode Median - Variation and Standard Deviation? 2- Find the arithmetic mean, median, and mode for the following grouped data Class 16-18 18-2020-22 22-2424-2626-28 Frequency 42 120 142 70 19 13 3- Find the standard deviation for the following grouped data Class 35-40 40-45 45-50 50-55 55-60 Frequency 5 15 38 29 29 4- Find the arithmetic mean, median, and hence find the coefficient of skewness from the frequency table Class 15-25 25-3035-45 45-55 55-65 Frequency 5 25 40 20 10 5- Find the arithmetic mean, median, and hence find the coefficient of skewness from the frequency table Class 10-20 20-30 30-40 40-50 50-60 Frequency 8 32 60 40 10