The following data give the annual salaries (in thousand dollars) of 20 randomly selected health care workers.

a. Calculate the values of the three quartiles and the interquartile range. Where does the value 57 fall in relation to these quartiles?
b. Find the approximate value of the 30th percentile. Give a brief interpretation of this percentile.
c. Calculate the percentile rank of 61. Give a brief interpretation of this percentile rank.

Transcribed Image Text:

57 71 39 64 38 53 58 61 35 62 45 50 67 40 74 44 77 55 64 59