If you know that the mean of the first four numbers is 15, what must be true for a fifth number to maintain the mean?

Anything above 15

Anything below 15

Equal to 15

Depends on total sum

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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?