Calculating range-variance and standard deviation

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Reference no: EM1320324

Q1) Following sample data reflect electricity bills for ten households in San Diego in March.

 

$118.20

$67.88

$133.40

$88.42

$110.34

$79.90

$144.56

$127.89

$89.34

$129.10

 

Calculate the range, variance, and standard deviation for these sample data.

 

2) Interpret meaning of coefficients (i.e., the coefficients attached to \'income\' and \'household size\'- don't worry about constant).

 

3) What would be forecast for amount charged if the \'income\' is $43,000 and \'household size\' is 3.

Reference no: EM1320324

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