Calculating range-variance and standard deviation

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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