The table below shows percentiles of height (in cm) for 20-year-old males and females, (a) Choose a 20 year old whose height you know and describe that person's height (Note: 1 in. = 2.54 cm) in comparison with these percentiles, (b) Do you suppose that height percentiles change over time for the population of a specified nation? Explain. (Data are from the National Center for Health Statistics, www.fedstats.gov.)
Selected Percentiles for Heights of 20 Year Olds (cm) | |||||
Gender | 5% | 25% | 50% | 75% | 95% |
Male | 165 | 172 | 177 | 182 | 188 |
Female | 153 | 159 | 163 | 168 | 174 |
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