Exercise 17.2
1.
Find the mean of the following data
x 5 8 10 12 14 16
f 4 5 8 10 2 2
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Step-by-step explanation:
To calculate the mean of grouped data, the first step is to determine the midpoint (also called a class mark) of each interval, or class. These midpoints must then be multiplied by the frequencies of the corresponding classes. The sum of the products divided by the total number of values will be the value of the mean.
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Step-by-step explanation:
mean = summation of fx divided by N
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