24. BMI and Gender Exercise 20 includes BMI values from 12 men and 12 women. Repeat Exercise 20 with the complete list of BMI values found in Data Set 1 in Appendix B. Do your conclusions change when the larger data sets are used?

Finding Standard Deviation from a Frequency Distribution. In Exercises 25–28, find the standard deviation of sample data summarized in a frequency distribution table by using the formula below, where x represents the class midpoint and f represents the class frequency. Also, compare the computed standard deviations to these standard deviations obtained by using Formula 3-4 with the original list of data values: (Exercise 25) 6.9;

(Exercise 26) 0.630; (Exercise 27) 4.0; (Exercise 28) 0.62.

standard deviation for frequency distribution 25. 26.