Mean, median, mode, and 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

What is the median?

Back

The median is the middle number in a sorted list of numbers. 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.

Front

What is the range?

Back

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

Front

How do you find the mean of 124, 102, 94, 96?

Back

Add the numbers: 124 + 102 + 94 + 96 = 416. Then divide by 4 (the number of values): 416 / 4 = 104.

Front

How do you find the median of 25, 26, 30, 41, 41, 45?

Back

First, arrange the numbers in order: 25, 26, 30, 41, 41, 45. Since there are 6 numbers (even), the median is the average of the 3rd and 4th numbers: (30 + 41) / 2 = 35.5.

Front

How do you find the mode of 12, 13, 12, 14, 15, 16, 12, 13, 15?

Back

The number 12 appears most frequently (3 times), so the mode is 12.

Front

What is the median of 5, 6, 6, 4, 7, 2, 3?

Back

Arrange the numbers: 2, 3, 4, 5, 6, 6, 7. The median is the middle number, which is 5.

Front

What is the range of 10, 15, 20, 25?

Back

The range is the largest number (25) minus the smallest number (10): 25 - 10 = 15.

Front

If a data set has no repeating numbers, what is the mode?

Back

If there are no repeating numbers, the data set has no mode.