6. U. S. households have become smaller over the years. The following table from the 2018 General Social Survey contains

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6. U. S. households have become smaller over the years. The
following table from the 2018 General Social Survey contains
information on the number of people currently aged 18 years or
older living in a respondent’s household. Calculate the mean number
of people living in a U. S. household in 2018.
Household Size
Frequency
1
406
2
601
3
260
4
100
5
50
6
50
7
20
8
10
9
2
10
1
Total
1500
7. Calculate the range and the interquartile-range for the
following data set.