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Calculate the sample mean and sample variance for the following frequency distribution of heights in centimeters for a sample of 8-year-old boys. If necessary, round

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Calculate the sample mean and sample variance for the following frequency distribution of heights in centimeters for a sample of 8-year-old boys. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Heights in Centimeters Class Frequency 122.1 - 125.6 40 125.7 - 129.2 19 129.3 - 132.8 45 132.9 - 136.4 31 136.5 - 140.0 28 Copy Data

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