The number of data set (n) is equal to 40
Data Given;
This is the average of a particular data set.
To solve this problem, we would apply the formula of calculating mean.
[tex]x = \frac{sum}{n}[/tex]
substitute the values and solve for the number of data set
[tex]20 = \frac{800}{n}\\ n = \frac{800}{20}\\ n = 40[/tex]
From the calculations above, the number of data set here is 40.
Learn more on mean here;
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