Question Video: Finding the Mean Value of a Data Set Involving Decimal Numbers Mathematics

Video Transcript

Find the mean of the following set of data: 9.2, 2.5, 1.7, 2.2, 6.4, 9.1, 2.2, and 5.9. If necessary, round your answer to the nearest tenth.

We recall that in order to calculate the mean, we need to divide the sum of the values by the number of values. In order to find the sum of the values, we need to add the numbers in the data set. This is equal to 39.2.

There are eight values in the data set. This means that we can calculate the mean by dividing 39.2 by eight. This is equal to 4.9. As this is already written to the nearest tenth, we do not need to round our answer. The mean of the data set to the nearest tenth is 4.9.