Question

A sociologist records the annual household income (in thousands of dollars) among a sample of families living in a high-crime neighborhood. Locate the lower, median, and upper quartiles for the times listed below. Hint: First arrange the data in numerical order.

lower quartile		thousand dollars
median		thousand dollars
upper quartile		thousand dollars

47	52
24	43
39	35
23	39
37	49

Answer 1

given data is

47, 52, 24, 43, 39, 35, 23, 39, 37, 49

sort the given data in ascending order.

23, 24, 35, 37, 39, 39, 43, 47, 49, 52

Median is the middle number in sorted data set

Median = ( 39 + 39 ) / 2

Median= 39

Lower quartile is the middle number in lower half of given data.

Lower Quartile = 35

Upper quartile is the middle number in Upper half of given data.

Lower Quartile = 47

lower quartile	35	thousand dollars
median	39	thousand dollars
upper quartile	47	thousand dollars