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Standard error of estimate

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A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this the company randomly chooses 6 small cities and offers the candy bar at different prices. Using candy bar sales as the dependent variable, the company will conduct a simple linear regression on the data below:

See attached file for full data.

Referring to the table what is the standard error of the estimate, Syx, for data?

A. 0.784
B. 0.885
C. 12.650
D. 16.299

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The solution gives the standard error of the estimate of the candy bar data.

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