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.