1.49 Infant mortality. The infant mortality rate is defined as the number of inf

Question

1.49 Infant mortality. The infant mortality rate is defined as the number of infant deaths per 1,000 live births. This rate is often used as an indicator of the level of health in a country. The relative frequency histogram below shows the distribution of estimated infant death rates for 224 countries for which such data were available in 2014.6 0.4 0.3 0.2 0.1 (a) Estimate Q1, the median, and Q3 from the histogram. (b) Would you expect the mean of this data set to be smaller or larger than the median? Explain your reasoning. 0 20.40 60-80 100-120 Infant mortality

Explanation / Answer

Till Q1, The probability is 0.25 This probability lies in the first bar, ie 10

Median is at p=0.5 or in the second bar , at 20

Q3 lies is the fourth bar....ie at 40 ( 0.35 in first,0.25 in second, 0.1 in 3rd and remaining in 4th)

b) This is the right skewed distribution. In right skewed, the mean is greater than the median

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