Mean, median, mode, range review

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

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 highest and lowest values in a data set.

Front

How do you find the mode in a data set?

Back

To find the mode, count how many times each number appears. The number that appears the most is the mode.

Front

How do you find the median in a data set with an odd number of values?

Back

Arrange the numbers in order and select the middle number.

Front

How do you find the median in a data set with an even number of values?

Back

Arrange the numbers in order and calculate the average of the two middle numbers.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set.

Front

Find the mean of the following data set: 5, 10, 15, 20, 25.

Back

Mean = (5 + 10 + 15 + 20 + 25) / 5 = 15.

Front

Find the median of the following data set: 3, 1, 4, 2, 5.

Back

Median = 3 (after arranging: 1, 2, 3, 4, 5).