Mean, Median, Mode, and Range

Front

What is the mean of a data set?

Back

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

Front

How do you calculate the median of a data set?

Back

To find the median, first arrange the numbers in ascending order. If there is an odd number of observations, the median is the middle number. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What is the mode in a data set?

Back

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

Front

Can a data set have more than one mode?

Back

Yes, a data set can have more than one mode if multiple numbers appear with the same highest frequency.

Front

What is the range of a data set?

Back

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

Front

Given the numbers 9, 9, 18, what is the mean?

Back

The mean is 12.

Front

How do you find the mode of the numbers 4, 4, 5, 6, 6, 6, 7?

Back

The mode is 6, as it appears most frequently.

Front

What is the median of the following numbers: 3, 1, 4, 2?

Back

First, arrange them in order: 1, 2, 3, 4. The median is the average of 2 and 3, which is 2.5.

Front

If a data set has the numbers 5, 5, 5, 2, 2, 8, what is the mode?

Back

The mode is 5, as it appears most frequently.

Front

What is the range of the data set: 10, 15, 20, 25?

Back

The range is 25 - 10 = 15.