Question

Calculate the mean of the electric bills for Family A. Round your answer to the nearest cent.

Month | Family A | Family C

January | $88.82 | $134.51

February | $84.80 | $118.06

March | $62.35 | $109.28

April | $65.17 | $90.15

May | $60.20 | $91.20

June | $74.86 | $96.36

July | $92.15 | $130.71

August | $99.89 | $129.16

September | $96.45 | $107.77

October | $81.63 | $100.95

November | $64.12 | $107.64

December | $72.58 | $123.82

Answer 1

The mean for Family A=78.585 , ≈78.59

Explanation:

I solved this with a TI-84 CE calculator. To do this you press stat-edit-put in the numbers-2nd+mode-stat-right arrow key-calc-1_Var_Stats-Calculate. Then X with the _ over it would be your mean.