The estimated distribution in (in the millions) of the population by age in a certain country for the year 2015 is shown in the pie chart, Make a frequency distribution for the data. Then use the table to estimate the SAMPLE MEAN and the SAMPLE DEVIATION of the data set. use 70 as a midpoint for "65 years and over" under 4 years- 20.4 / 5-14 years- 41.4 / 15-19 years -18.3 / 20-24 years 20.9 / 25-34 years - 46.9 / 35-44 years 32.8 / 45-64 years - 85.1 / 65 years and over -58.9