3. Describing Data Numerically
Mean
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Find the mean of the sample data below.
A
24
B
15
C
23
D
18
Verified step by step guidance1
To find the mean of a sample data set, you first need to sum all the values in the data set.
Add the numbers from the sample data: 15, 23, and 18. This can be expressed as:
Calculate the total sum from the previous step.
Count the number of data points in the sample. In this case, there are 3 data points.
Divide the total sum by the number of data points to find the mean. This can be expressed as:
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