The bigger the stop sign, the more expensive it is. Here is a graph of the height of a sign in inches versus its cost in dollars.
To achieve linearity, the data was transformed using a square root function of cost. Here are the results and a residual plot.Dependent Variable: sqrt(cost)
$ \mathrm{R} $ (correlation coefficient) $ =0.98946627 $
$ \mathrm{R}-\mathrm{sq}=0.97904349 $
s: 0.2141

$\begin{array}{lrr}
\text { Parameter } & \text { coeff } & \text { se } \
\text { Intercept } & 1.1857 & 0.4346 \
\text { height } & 0.1792 & 0.0151
\end{array}$

-Use your equation to predict the cost of a 48" stop sign.

Question

The bigger the stop sign, the more expensive it is. Here is a graph of the height of a sign in inches versus its cost in dollars.
To achieve linearity, the data was transformed using a square root function of cost. Here are the results and a residual plot.Dependent Variable: sqrt(cost)
$ \mathrm{R} $ (correlation coefficient) $ =0.98946627 $
$ \mathrm{R}-\mathrm{sq}=0.97904349 $
s: 0.2141

$\begin{array}{lrr}
\text { Parameter } & \text { coeff } & \text { se } \
\text { Intercept } & 1.1857 & 0.4346 \
\text { height } & 0.1792 & 0.0151
\end{array}$

-Use your equation to predict the cost of a 48" stop sign.

Quizplus · Accepted Answer

The Answer of The bigger the stop sign, the more expensive it is. Here is a graph of the height of a sign in inches versus its cost in dollars.
To achieve linearity, the data was transformed using a square root function of cost. Here are the results and a residual plot.Dependent Variable: sqrt(cost)
$ \mathrm{R} $ (correlation coefficient) $ =0.98946627 $
$ \mathrm{R}-\mathrm{sq}=0.97904349 $
s: 0.2141

$\begin{array}{lrr}
\text { Parameter } & \text { coeff } & \text { se } \
\text { Intercept } & 1.1857 & 0.4346 \
\text { height } & 0.1792 & 0.0151
\end{array}$

-Use your equation to predict the cost of a 48" stop sign.

The Bigger the Stop Sign, the More Expensive It Is R \mathrm{R} R

The Bigger the Stop Sign, the More Expensive It Is $\mathrm{R}$