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Fast food restaurants are been required to publish nutrition information about the foods they serve. Nutrition information about a random sample of McDonald's lunch/dinner menu items (excluding sides and drinks) was obtained from their website. We wish to use the sodium content (in milligrams) to better understand the number of calories in the lunch/dinner menu items at McDonald's. Some summary statistics, partial computer output from a regression analysis, and a scatterplot (with regression line) of the data are provided.
Use two decimal places when reporting the results from any calculations, unless otherwise

-Using the scatterplot, should we should have any serious concerns about the conditions being met for using a linear model with these data.

Question

Use the following to answer the questions below:
Fast food restaurants are been required to publish nutrition information about the foods they serve. Nutrition information about a random sample of McDonald's lunch/dinner menu items (excluding sides and drinks) was obtained from their website. We wish to use the sodium content (in milligrams) to better understand the number of calories in the lunch/dinner menu items at McDonald's. Some summary statistics, partial computer output from a regression analysis, and a scatterplot (with regression line) of the data are provided.
Use two decimal places when reporting the results from any calculations, unless otherwise 
 
-Using the scatterplot, should we should have any serious concerns about the conditions being met for using a linear model with these data.

Quizplus · Accepted Answer

There should be no serious concerns. There is no curved pattern and no fanning of the data. There is one unusual observation (about 1100 mg of sodium and nearly 800 calories), but it is not too bad.

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