Measures of Central Tendency

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

How do you find the median?

Back

To find the median, arrange the numbers in order and identify the middle number. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode?

Back

The mode is the number that appears most frequently in a data set. A set can have one mode, more than one mode, or no mode at all.

Front

Calculate the mean of these numbers: 4, 8, 6.

Back

The mean is (4 + 8 + 6) / 3 = 6.

Front

What is the median of the following numbers: 1, 3, 3, 6, 7, 8?

Back

The median is 4, which is the average of the two middle numbers (3 and 6).

Front

Find the mode of this set: 2, 4, 4, 6, 7, 7, 7, 8.

Back

The mode is 7, as it appears most frequently.

Front

If the scores are 10, 20, 30, what score is needed to make the mean 25?

Back

You need to score 40, because (10 + 20 + 30 + x) / 4 = 25.

Front

What is the median of these numbers: 5, 3, 8, 9, 2?

Back

First, arrange them: 2, 3, 5, 8, 9. The median is 5.

Front

What is the mode of the following numbers: 1, 2, 2, 3, 4, 4, 4, 5?

Back

The mode is 4, as it appears most frequently.

Front

Calculate the mean of these numbers: 10, 20, 30, 40, 50.

Back

The mean is (10 + 20 + 30 + 40 + 50) / 5 = 30.