Question

A study was carried out to relate sales revenue y (in thousands of dollars) to advertising expenditure x (also in thousands of dollars) for fast-food outlets during a 3 month period. A sample of 15 outlets yielded the accompanying summary quantities.\\ $\sum x = 14.30$ $\sum y = 1438.30$ $\sum x^2 = 13.91$\ $\sum y^2 = 140,355$ $\sum xy = 1388.20$\ $\sum (y - \bar{y})^2 = 2401.84$ $\sum (y - \hat{y})^2 = 561.44$

          A study was carried out to relate sales revenue y (in thousands of dollars) to advertising expenditure x (also in thousands of dollars) for fast-food outlets during a 3 month period. A sample of 15 outlets yielded the accompanying summary quantities.\\
$\sum x = 14.30$ $\sum y = 1438.30$ $\sum x^2 = 13.91$\
$\sum y^2 = 140,355$ $\sum xy = 1388.20$\
$\sum (y - \bar{y})^2 = 2401.84$ $\sum (y - \hat{y})^2 = 561.44$

A study was carried out to relate sales revenue y (in thousands of dollars) to advertising expenditure x (also in thousands of dollars) for fast-food outlets during a 3 month period. A sample of 15 outlets yielded the accompanying summary quantities.

∑ x = 14.30 ∑ y = 1438.30 ∑ x^2 = 13.91∑ y^2 = 140,355 ∑ xy = 1388.20∑ (y - y̅)^2 = 2401.84 ∑ (y - ŷ)^2 = 561.44

Added by Tammy R.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Thanks for your feedback!

Calculate se and sb. (Give the answers to four decimal places.) A sample of 15 outlets yielded the following summary quantities: xÌ„ = 14.30, yÌ„ = 1438.30, and âˆ‘(x - xÌ„)Â² = 13.91.