All Dot Plot math games

Mean value of dot plot

Determine missing number given mean

Median value of dot plot

The dot plot shows the number of books read by the first 7 students in a class.
How many books did the 8th student read if the mean number of books read by all students is 3?

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Can you answer 10 correctly?

On a dot plot each dot represents one occurrence of a value on a number line. The more dots stacked above a number, the more frequently that value occurs in the data set. The mean is the average value of dot. To determine the mean value of a dot plot, first count the total number of dots on the plot. Then, find the sum of the values that each dot represents. Finally, divide the sum of the values by the total number of dots.