Compute the Mean and the Standard deviation. Class 1, 0 up to 5: Frequency is 4 and the Midpoint is 2.5. Class 2, 5 up to 10: Frequency is 15, and the Midpoint is 7.5. Class 3, 10 up to 15: Frequency is 27, and the Midpoint is 12.5. Class 4, 15 up to 20: Frequency is 18, and the Midpoint is 17.5. Class 5, 20 up to 25: Frequency is 6, and the Midpoint is 22.5. I am sorry but I don\'t know how to input a table. Solution mean = (4*2.5 + 15*7.5 + 27*12.5 + 18*17.5 + 6*22.5)/70 = 13.