I’m not sure on this at all. Anybody who can help?

The mean of the data set with outlier = 16

The mean of the data set without outlier = 13

Step-by-step explanation:

The mean is also sometimes called the average, to find the mean, you add up every number in the data set, and you divide that sum by the total number of data points within the set.

Given: The data set 12 , 14 , 15 , 28 , 11

Arranging the data in order from the least to the greatest

11 , 12 , 14 , 15 , 28

The number of data set = 5

The sum of the data set = 11 + 12 + 14 + 15 + 28 = 80

So, the mean = 80/5 = 16

The outlier of the data set is 28 because most of the date between 11 , 15

The data without outlier are: 11 , 12 , 14 , 15

The number of data set = 4

The sum of the data set = 11 + 12 + 14 + 15 = 52

So, the mean = 52/4 = 13

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y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3