Mean and Range

Front

What is the mean of a set of numbers?

Back

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

Front

How do you calculate the mean of the numbers 3, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 1?

Back

Add all the numbers: 3+2+1+3+2+1+3+2+1+3+2+1 = 24. There are 12 numbers, so the mean is 24/12 = 2.

Front

What is the range of a set of numbers?

Back

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

Front

How do you find the range of the data set 45, 67, 89, 23, 56, 78?

Back

The highest number is 89 and the lowest is 23. The range is 89 - 23 = 66.

Front

What is the mean of the numbers 11, 22, 33, 44, 55?

Back

Add all the numbers: 11+22+33+44+55 = 165. There are 5 numbers, so the mean is 165/5 = 33.

Front

How do you calculate the mean of the numbers 4, 9, 7, 10, 5?

Back

Add all the numbers: 4+9+7+10+5 = 35. There are 5 numbers, so the mean is 35/5 = 7.

Front

What is the mean of the numbers 20, 30, 24, 32?

Back

Add all the numbers: 20+30+24+32 = 106. There are 4 numbers, so the mean is 106/4 = 26.5.

Front

What is the formula for calculating the mean?

Back

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