Measures of Center

Front

What is the mode?

Back

The mode is the number that occurs the most in a data set.

Front

Find the mode: 5, 0, 9, 9, 3, 0, 5, 5, 4

Back

5

Front

What is the median?

Back

The median is the middle number in a sorted data set.

Front

Find the median of the data set: 5, 6, 3, 9, 0, 4, 1, 2, 7

Back

4

Front

Find the median of the data set: 77, 99, 80, 78, 85

Back

78

Front

What is the range?

Back

The range is the difference between the highest and lowest values in a data set.

Front

Find the range: 12, 5, 9, 18, 22, 25, 5

Back

20

Front

How do you find the median in an even set of numbers?

Back

To find the median in an even set, average the two middle numbers.

Front

Find the median of the data set: 3, 1, 4, 2

Back

2.5

Front

What is the average (mean)?

Back

The average (mean) is the sum of all numbers divided by the count of numbers.