Pop-Up Coffee Vendors Have Been Popular in the City of Adelaide

question 119

Essay

Pop-up coffee vendors have been popular in the city of Adelaide in 2013. A vendor is interested in knowing how temperature (in degrees Celsius) and number of different pastries and biscuits offered to customers impacts daily hot coffee sales revenue (in $00's).
A random sample of 6 days was taken, with the daily hot coffee sales revenue and the corresponding temperature and number of different pastries and biscuits offered on that day, noted.
Excel output for a multiple linear regression is given below: $$\begin{array} { | c | c | r | } \hline \text { Coffee sales revenue } & \text { Temperature } & \text { Pastries/biscuits } \\\hline 6.5 & 25 & 7 \\\hline 10 & 17 & 13 \\\hline 5.5 & 30 & 5 \\\hline 4.5 & 35 & 6 \\\hline 3.5 & 40 & 3 \\\hline 28 & 9 & 15 \\\hline\end{array}$$ $\begin{array}{|l|r|r|r|r|r|c|}\hline \text { SUMMARV } \\\text { OUTPUT } \\\hline \text { Regression } \\\text { Stotistics } \\\hline \text { Multiple R } & 0.87 \\\hline \text { R Square } & 0.75 \\\hline \begin{array}{l}\text { Adjusted R } \\\text { Square }\end{array} & 0.59 \\\hline \text { Standard Error } & 5.95 \\\hline \text { Otservations } & 6.00 \\\hline\\\hline \text { ANOVA }\\\hline & & & & & \text { Significonce } \\& \text { df } & S S & M S & F & F \\\hline \text { Regression } & 2.00 & 322.14 & 161.07 & 4.55 & 0.12 \\\hline \text { Residual } & 3.00 & 106.20 & 35.40 \\\hline \text { Total } & 5.00 & 428.33 & \\\hline\\\hline & \text { Coefficients } & {\begin{array}{c}\text { Standard } \\\text { Error }\end{array}} & {\text { tStot }} & \text { Pvolue } & \text { Lower 95\% } & \begin{array}{c}\text { Upper } \\95 \%\end{array} \\\hline \text { Intercept } & 18.68 & 37.8 & 0.49 & 0.66 & -101.88 & 139.24 \\\hline \text { Temperature } & -0.50 & 0.83 & -0.60 & 0.59 & -3.15 & 2.15 \\\hline \text { Patries/bisouits } & 0.49 & 2.02 & 0.24 & 0.82 & -5.94 & 6.92 \\\hline\end{array}$ Interpret the intercept. Does this make sense?

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Definitions:

Visuo-Spatial Sketchpad

The visuo-spatial sketchpad is a component of working memory responsible for the temporary storage and manipulation of visual and spatial information.

Phonological Loop

A component of the working memory model responsible for processing and storing verbal and auditory information.

Episodic Memory

The retention of information about the where, when, and what of life’s happenings—that is, how individuals remember life’s episodes.

Central Executive

A component of working memory in cognitive psychology that controls and regulates cognitive processes, directing attention and managing tasks.