Mean, Median, Mode and Range

Front

What is the mean of a set of numbers?

Back

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

Front

How do you calculate the mean of these numbers: 2, 57, 38, 42, 6?

Back

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

Front

What is the median of a set of numbers?

Back

The median is the middle number in a sorted list of numbers. If there are two middle numbers, the median is the average of those two.

Front

How do you find the median of the data set: 3, 17, 17, 11, 8, 13, 5, 18?

Back

First, sort the numbers: 3, 5, 8, 11, 13, 17, 17, 18. There are 8 numbers, so the median is the average of the 4th and 5th numbers: (11 + 13) / 2 = 12.

Front

What is the mode of a set of numbers?

Back

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

Front

What is the range of a set of numbers?

Back

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

Front

How do you calculate the range of the numbers: 2, 57, 38, 42, 6?

Back

Identify the largest number (57) and the smallest number (2). The range is 57 - 2 = 55.

Front

What should you do if there are two middle numbers when finding the median?

Back

Add the two middle numbers together and divide by 2.

Front

What is the mean of the following numbers: 9, 8, 12, 6, 10?

Back

Add the numbers: 9 + 8 + 12 + 6 + 10 = 45. Then divide by the count of numbers (5): 45 / 5 = 9.

Front

If a set of numbers is: 1, 2, 2, 3, 4, what is the mode?

Back

The mode is 2, as it appears most frequently.