Question

QUESTION 15 Variance. A statement repeated over and over in Statistics is "The standard deviation is the square root of the variance. Suppose that the standard deviation of a Statistics test was 12.56. What is the variance rounded to four decimals. QUESTION 16 Mid point of class. Statistical data are usually grouped by intervals called classes. Each class is, then, represented by the mid-point that is obtained by adding the lower value to the higher value and divide by 2. For the following table of women height in inches, find out the mid points. Height Women Mid Point requency nches 58.00 61.00 62.00 65.00 66.00 69.00 0.00 73.00 74.00 77.00 14 Click Save and Submit to save and submit. Click Save All Answers to save all onswers

Answer 1

(15) Variance 12.56 157.7536 (16) Interval Mid point frequency 58 61 59.5 62 65 63.5 66 -69 67.5 70 73 71.5 74 - 77 75.5 3 14 | 0 8 6