The data shown in the following table includes daily soft drink sales (in gallon

Question

The data shown in the following table includes daily soft drink sales (in gallons) and the average daily temperature (in degree Fahrenheit): How many gallons of soft-drink sales would be predicted for a given temperature? If the temperature hit 102 Degree F. It will be 103 gallons. If the temperature hit 103 Degree F. It will be 101 gallons. It is not reliable to predict the number of gallons for temperatures over 98 degrees. If the temperature hit 101 Degree F. It will be 102 gallons. If the temperature hit 101 Degree F. it will be 99 gallons.

Explanation / Answer

Regression equation provides a reliable prediction only if the value of X is within the range of x-values present in the original dataset.This is called interpolation.

When we use an x value outside the range of x-values present in the original dataset, the 'y' value obtained might not be reliable because the linear relationship between the two variable might no longer be valid

Hence, answer is C

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