Question: Given below are numbers taken from the hydro bills of the family mentioned in Exercise 1. The numbers represent the usage of hydro (in kilowatt-hours)

Given below are numbers taken from the hydro bills of the family mentioned in Exercise 1. The numbers represent the usage of hydro (in kilowatt-hours) every two months for six years.

Find the
(a) Mean,
(b) Median,
(c) Mode,
(d) Midrange,
(e) Range,
(f) Standard deviation,
(g) Variance,
(h) Qv (i) P30, and
(j) D7.

22 21 20 22 27 25 19 18 18 18 23 21 26 24 16 15 23 24 35 32 18 28 31 45 24 23 20 23 23 25 19 19 18 19 23 24

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