Mean and Median Calculations

Front

What is the mean?

Back

The mean is the average of a set of numbers. You find it by adding all the numbers together and then dividing by how many numbers there are.

Front

How do you find the mean of 2, 57, 38, 42, 6?

Back

Add the numbers: 2 + 57 + 38 + 42 + 6 = 145. Then divide by 5 (the number of values): 145 ÷ 5 = 29.

Front

What is the median?

Back

The median is the middle number in a set of numbers when they are arranged in order.

Front

How do you find the median of 3, 1, 2?

Back

Arrange the numbers in order: 1, 2, 3. The median is 2.

Front

What is the mode?

Back

The mode is the number that appears most often in a set of numbers.

Front

What is the range?

Back

The range is the difference between the largest and smallest numbers in a set.

Front

How do you find the range of 10, 5, 8?

Back

The largest number is 10 and the smallest is 5. The range is 10 - 5 = 5.

Front

What is a box and whisker plot?

Back

A box and whisker plot is a way to show the spread of data based on five numbers: minimum, first quartile, median, third quartile, and maximum.

Front

What does the minimum mean in a box and whisker plot?

Back

The minimum is the smallest number in the data set.

Front

What is the maximum in a box and whisker plot?

Back

The maximum is the largest number in the data set.