Question
The following table shows the grouped data, in classes, for the heights of 50 people. height...
The following table shows the grouped data, in classes, for
the heights of 50 people.
height (in cm) - classes frequency
120 - 130 2
130 - 140 5
140 - 150 25
150 - 160 10
160 - 170 8
a) Calculate the mean of the salaries of the 20 people.
b) Calculate the standard deviation of the salaries of the 20
people
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Answer #1
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