what is the new mean, rounded to the nearest hudreth.

Question

mrs.hall records the heights of 50 students in a spreadsheet. The mean height is 68 inches. after looking at the data again she realized that two of the 50 observations were outliers that must have been typos, 82 and 86 inches. she deleted these two observations. what is the new mean, rounded to the nearest hudreth.

Answer 1

50 students, mean of 68

50*68=3400 total inches

82 and 86 are deleted

3400-82-86=3232 (there are now only 48 heights)

3232/48=67.333...=67.33 is the new mean rounded off