A frequency table shows family sizes of a class: 1 (5 times), 2 (10 times), 3 (6 times). What is the mean family size?

2.27

2.5

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Q1.

What is the mean of the numbers 4, 8, and 12?

Q2.

Which of the following represents a characteristic of the mean?

Q3.

If the mean of the data set {5, 10, 15, 20} is 12.5, which statement is true?

Q4.

What happens to the mean if a new number much larger than the current mean is added?