Question

For the following Ungrouped Frequency Distribution below : x 14 18 20 21 24 25 28...

For the following Ungrouped Frequency Distribution below :
x 14 18 20 21 24 25 28 30
f 4 8 3 8 2 5 7 4
1) Find ( Mean , Mode , Median , Range , Midrange , Standard Deviation , Variance )
2) Find coefficient of variation
3) Compute the z-score of 28

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