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The Regression Output for Sales and Number of Salespeople Are

question 24

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The regression output for sales and number of salespeople are shown below. Model summary
 Model RR-square  Adjusted R-square  Std. error of  the estimate 1.746(a) .556.54146.873\begin{array} { | l | c | r | r | r | } \hline \text { Model } & \boldsymbol { R } & \boldsymbol { R } \text {-square } & \begin{array} { c } \text { Adjusted } \\\boldsymbol { R } \text {-square }\end{array} & \begin{array} { r } \text { Std. error of } \\\text { the estimate }\end{array} \\\hline 1 & .746 ( \mathrm { a } ) & .556 & .541 & 46.873 \\\hline\end{array} a Predictors: (Constant) , number of salespeople
ANOVA(b)
 Model  Sum of  Squares df Mean square F Sig. 1 Regression 77152.238177152.23835.117.000(a)  Residual 61516.962282197.034 Total 138669.20029\begin{array} { | l | l | r | r | r | r | r | } \hline \text { Model } & & \begin{array} { c } \text { Sum of } \\\text { Squares }\end{array} & { \boldsymbol {d f } } & \text { Mean square } & \boldsymbol { F } & { \text { Sig. } } \\\hline 1 & \text { Regression } & 77152.238 & 1 & 77152.238 & 35.117 & .000 ( \mathrm { a } ) \\\hline & \text { Residual } & 61516.962 & 28 & 2197.034 & & \\\hline & \text { Total } & 138669.200 & 29 & & & \\\hline\end{array} a Predictors: (Constant) , number of salespeople
B Dependent Variable: Sales (A$'000)
Coefficients(a)
 Model  Unstandardised  coefficients  Standardised  coefficients t Sig. B Std. Error  Beta 1 (Constant)  72.6129.2032.565.013 Number of salespeople 35.6233.296.2015.926.064\begin{array} { | l | l | cr | r | r | r |} \hline\text { Model } & & { \begin{array} { c } \text { Unstandardised } \\\text { coefficients }\end{array} } && \begin{array} { c } \text { Standardised } \\\text { coefficients }\end{array} & { \boldsymbol { t } } & { \text { Sig. } } \\\hline & & \boldsymbol { B } & \text { Std. Error } & \text { Beta } & & \\\hline 1 & \text { (Constant) } & 72.612 & 9.203 & & 2.565 & .013 \\\hline & \text { Number of salespeople } & 35.623 & 3.296 & .201 & 5.926 & .064 \\\hline\end{array} a Dependent variable: Sales (A$'000)
The above shows that for every one-unit increase in number of salespeople, average sales will increase by approximately:


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