2-3 Beyond the Basics 21. Back-to-Back Relative Frequency Histograms When using

Question

2-3 Beyond the Basics 21. Back-to-Back Relative Frequency Histograms When using histograms to compare two data sets, it is sometimes difficult to make comparisons by looking back and forth be- twee:, the two histograms. A back-to-back relative frequency histogram uses a format that makes the comparison much easier. Instead of frequencies, we should use relative frequencies (per- centages or proportions) so that the comparisons are not distorted by different sample sizes. Compiose che back-to-back relative frequency histograms shown below by using the data from Table 2-8 on page 51. Then use the result to compare the two data sets. Pulse Rate 129.5 119.5 109.5 99.5 89.5 79.5 69.5 59.5 49.5 Man

Explanation / Answer

The data for completion of the comparative back to back histogram is missing from the question. From the comparative histogram we can infer that the 15% males have pulse ratesrinithe range of 49.5 to 59.5 while in comparison non of females have pulse rate in this ranger

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