Statistics Measures of Center

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 count of numbers.

Front

What is the Mode?

Back

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

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 observations, the median is the average of the two middle numbers.

Front

How do you find the Mean of a data set?

Back

To find the Mean, add all the numbers together and divide by the total count of numbers.

Front

How do you find the Mode of a data set?

Back

To find the Mode, identify the number that occurs most frequently in the data set.

Front

How do you find the Median of a data set?

Back

To find the Median, arrange the numbers in order from least to greatest and find the middle number.

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

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

Back

The Mean is 6 ( (5+7+3+9)/4 = 6 ).

Front

If the data set is 4, 4, 6, 8, what is the Mode?

Back

The Mode is 4, as it appears most frequently.

Front

If the data set is 10, 20, 30, 40, what is the Median?

Back

The Median is 25, as it is the average of 20 and 30.