Halloween Is a Fun Night $\mathrm{R}$ (Correlation Coefficient) $=0.19534425$

Halloween is a fun night. It seems that older children might get more candy because they can travel further while
trick-or-treating. But perhaps the youngest kids get extra candy because they are so cute. Here are some data that examine
this question, along with the regression output.

Dependent Variable: candy
Sample size: 9
$\mathrm{R}$ (correlation coefficient) $=0.19534425$
$\mathrm{R}-\mathrm{sq}=0.038159375$
$s=11.297554$
$\begin{array}{lrr}\text { Parameter } & \text { Estimate } & \text { Std. Err. } \\ \text { Intercept } & 29.767327 & 12.21138 \\ \text { Age } & 0.88861386 & 1.6862229\end{array}$




-The next day, a young girl reveals that her older brother also went trick-or-treating, but didn't want to admit that he participated. He was added to the data set and these are the results.

Dependent Variable: candy
Sample size: 10
$R$ (correlation coefficient $)=0.76362369$
$\mathrm{R}-\mathrm{sq}=0.58312115$
$s=12.709041$

$\begin{array}{lrr}\text { Parameter } & \text { Estimate } & \text { Std. Err. } \\ \text { Intercept } & 13.569231 & 9.0783516 \\ \text { Age } & 3.4038462 & 1.0175376\end{array}$


Describe the effect of this new candy collector on the regression model.

Correct Answer:

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This new point is very influen...

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