Mean, Median, Mode, and Range

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 number in a sorted data set. 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. A data set can have one mode, more than one mode, or no mode at all.

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 find the range of the data set: 5, 10, 15, 20?

Back

Range = 20 - 5 = 15.

Front

What does it mean if a data set has no mode?

Back

It means that no number appears more than once in the data set.

Front

Can a data set have more than one mode?

Back

Yes, a data set can have multiple modes if two or more numbers appear with the same highest frequency.

Front

How do you find the median of the data set: 3, 1, 4, 2?

Back

First, sort the numbers: 1, 2, 3, 4. The median is the average of 2 and 3, which is 2.5.

Front

What is the mode of the data set: 1, 2, 2, 3, 4?

Back

The mode is 2, as it appears most frequently.

Front

If the data set is: 7, 3, 5, 9, what is the median?

Back

First, sort the numbers: 3, 5, 7, 9. The median is the average of 5 and 7, which is 6.