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

Question:

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

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

a. Calculate the mean, median, and mode for these data.
b. Calculate the 15% trimmed mean for these data.

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