(A)Draw a Scatterplot,of the Data and Comment on the Relationship

question 6

Essay

(A)Draw a scatterplot,of the data and comment on the relationship between shelf space and weekly sales.
(B)Run a regression on this data set and report the results.
(C)What are the least squares regression coefficients of the Y-intercept (a)and slope (b)?
(D)Interpret the meaning of the slopeb.
(E)Predict the average weekly sales (in hundreds of dollars)of international food for stores with 13 feet of shelf space for international food.
(F)Why would it not be appropriate to predict the average weekly sales (in hundreds of dollars)of international food for stores with 35 feet of shelf space for international food?
(G)Identify the coefficient of determination, ,and interpret its meaning.
(H)Determine the standard error of the estimate.What does it represent?
(I)Draw a scatterplot of residuals versus fitted values.What does this graph indicate?

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Definitions:

Relevance

The degree to which something is related or useful to the matter at hand.

Scope

The extent or range of view, reach, application, effectiveness, or influence of an object, discussion, or analysis.

Range

The difference between the highest and lowest values in a set of numbers, indicating the spread or dispersion.

Theory

A system of ideas intended to explain something, based on general principles independent of the thing to be explained, often tested and grounded in evidence.