Mean, median, mode, range review

Front

What is the mean of a data set?

Back

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

Front

What is the median of a data set?

Back

The median is the middle value of a data set when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode of a data set?

Back

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

Front

What is the range of a data set?

Back

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

Front

How do you calculate the mean of the data set: 15, 22, 19, 20, 29, 18, 25, 19, 31?

Back

Mean = (15 + 22 + 19 + 20 + 29 + 18 + 25 + 19 + 31) / 9 = 22.

Front

How do you find the median of the data set: 17, 35, 20, 18, 29, 26?

Back

First, arrange the numbers in order: 17, 18, 20, 26, 29, 35. The median is the average of the two middle numbers (20 and 26), which is 23.

Front

How do you find the mode of the data set: 10, 18, 13, 22, 10, 13, 10, 19?

Back

The mode is 10, as it appears most frequently (three times).

Front

How do you calculate the range of the data set: 37, 40, 33, 45, 32, 34?

Back

Range = Largest number (45) - Smallest number (32) = 13.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values).

Front

What happens if there is no mode in a data set?

Back

If no number repeats, the data set is said to have no mode.