Question 1

How do I calculate the mean?

Accepted Answer

Add up all the numbers and divide by how many there are. For example, the mean of 2, 4, 6, 8 is (2+4+6+8) ÷ 4 = 5.

Question 2

How do I find the median?

Accepted Answer

Sort the numbers from smallest to largest. If there is an odd count, the median is the middle number. If there is an even count, average the two middle numbers. For example, the median of 3, 5, 7, 9 is (5+7) ÷ 2 = 6.

Question 3

What is the mode?

Accepted Answer

The mode is the value that appears most often. A set can have one mode, multiple modes (bimodal), or no mode if every value appears exactly once.

Question 4

What is the range?

Accepted Answer

The range is the difference between the largest and smallest values: Range = Maximum − Minimum.

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