Mean, Median, Mode, Range

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 total count of numbers.

Front

How do you calculate the mean of the grades 100, 96, 96, 88, 70, and 100?

Back

Add the grades: 100 + 96 + 96 + 88 + 70 + 100 = 550. Then divide by the number of grades (6): 550 ÷ 6 = 91.67, rounded to 92.

Front

What is the median?

Back

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

Front

How do you find the median of the numbers 3, 5, 7, 4, 3, 1?

Back

First, sort the numbers: 1, 3, 3, 4, 5, 7. There are two middle numbers (3 and 4), so add them together (3 + 4 = 7) and divide by 2 to get 3.5.

Front

What is the mode?

Back

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

Front

What is the range?

Back

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

Front

How do you calculate the range of the numbers 8, 10, 60, 3, 5, 13, 12, 40, 8?

Back

Identify the highest number (60) and the lowest number (3). The range is 60 - 3 = 57.

Front

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

Back

Add them together and divide by 2.

Front

What is the definition of mode?

Back

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

Front

If the numbers are 2, 4, 4, 6, 8, what is the mode?

Back

The mode is 4, as it appears most frequently.