The following table gives the cost of household’s electricity bills during the spring months, in dollars. The households are in the same area and are similar in size. The first column represents houses with central air, and the second column represents houses with window units. (Round answers to one decimal place) Central Air Window Unit 32 16 65 87 85 98 100 120 67 42 40 20 70 80 80 90 98 110 70 40 a) The mean for the Central air column is Answer. b) The mean for the Window Unit column is Answer. c) The standard deviation
The following table gives the cost of household’s electricity bills during the spring months, in dollars. The households are in the same area and are similar in size. The first column represents houses with central air, and the second column represents houses with window units. (Round answers to one decimal place)
|
Central Air |
Window Unit |
|
32 |
16 |
|
65 |
87 |
|
85 |
98 |
|
100 |
120 |
|
67 |
42 |
|
40 |
20 |
|
70 |
80 |
|
80 |
90 |
|
98 |
110 |
|
70 |
40 |
a) The mean for the Central air column is Answer.
b) The mean for the Window Unit column is Answer.
c) The standard deviation for the Central Air column is Answer.
d) The standard deviation for the Window Unit column is Answer.
We have given that data .
I want to find mean and standard deviation.
Mean =sum of observations / total number of observations
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