Calculate the sample variance and sample standard deviation for the following frequency distribution of heart rates for a sample of American adults. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Answer How to enter your answer (opens in new window) Heart Rates in Beats per Minute Class Frequency 51-58 7 59-66 13 67-74 11 75-82 5 83-90 3 Sample variance Sample standard deviation Copy Data Tables Keypad Keyboard Shortcuts