Algebra

A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey results for the first-, second-, and third-period classes are as follows:

First period: 2, 4, 3, 1, 0, 2, 1, 3, 1, 4, 9, 2, 4, 3, 0

Second period: 3, 2, 3, 1, 3, 4, 2, 4, 3, 1, 0, 2, 3, 1, 2

Third period: 4, 5, 3, 4, 2, 3, 4, 1, 8, 2, 3, 1, 0, 2, 1, 3

Which is the best measure of center for second period and why?

A. Mean, because there are no outliers that affect the center

B.Median, because there is 1 outlier that affects the center

C.Interquartile range, because there is 1 outlier that affects the center

D.Standard deviation, because there are no outliers that affect the center

It's either A or D because there are no outliers. Does anybody know which one it is? I'm leaning more towards A. Mean, because there are no outliers that affect the center. Is this right?

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  1. A. Mean, because there are no outliers that affect the center

    Am I right? I just need a yes or a no??

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    2. 👎 1
  2. Yes, Mean can also mean average. The average is the center of the group of numbers.

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  3. was choice A correct?

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    2. 👎 1

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