To calculate the mean without the outlier of $78, we need to find the sum of all the prices and then divide by the number of prices excluding the outlier.
For shirts:
Sum of prices = 56 + 61 + 64 + 69 + 68 + 57 + 57 + 61 + 56 = 549
Number of prices (excluding outlier) = 8
Mean price for shirts (excluding outlier) = 549 / 8 ≈ 68.625
For pants:
Sum of prices = 62 + 62 + 57 + 57 + 64 + 58 + 57 + 62 = 479
Number of prices = 8
Mean price for pants = 479 / 8 = 59.875
Combined mean without outlier = (68.625 + 59.875) / 2 ≈ 64.25
The difference in the means of both shirts and pants combined if you remove the outlier of $78 is approximately $64.25.
Price in Dollars
A B C D E F G H I
Pants 78 62 62 57 57 64 58 57 62
Shirts 56 61 64 69 68 57 57 61 56
Myra created a spreadsheet and a line graph with the prices of men’s shirts and pants on sale at a store, rounded to the nearest dollar. What is the difference in the means of both shirts and pants combined if you remove the outlier of $78? Round to the nearest hundredth.
(1 point)
1 answer
1 answer