dixoncaylor
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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 hundredth?

Respuesta :

First you need to find the total number of inches.  To do that we multiply the number of students by the mean

50*68 = 3400

Then we subtract the two outliers from the total inches

3400-82-86 = 3232

Since we removed two heights, we must remove 2 students also
50-2 = 48

Now to get the new mean we divide the new total inches (3232) by the new number of students (48)

3232/48 =  67.33 to the nearest hundreth

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