Calories vs. Fat In French Fries

Emily CongerMegan Dautel

Lacy AllredJennifer Knight

Bernadette Martinez

Purpose of the Study

• To find the relation between grams of fat and calories in a large order of french fries at 11 fast food restaurants.

• Hypothesis- The more grams of fat in a large order of french fries will increase the amount of calories.

Best Fit Line

Fries Fat (g) CaloriesDQ 21 500Chick-fil-a 23 430Artic Circle 30 564Sonic 18 450McDonald's 25 500Wendy's 25 540Burger King 27 540What-a-Burger 36 640Carl's Jr. 24 500Jack in the Box 29 621In-n-Out Burger 18 400

Least-Square Regression Line

Y=12.63x+200.03

Residual Plot

Our InformationR=.902

Table II in TextbookR=.602

Analysis

• Our scatter plot indicates that there is a strong linear relation that exists between fat content and calories in fast-food french fries.

• Our residual plot demonstrates that R=0.902 is close to 1, indicating linear relationship.

Predictions

• To test that our hypothesis, we looked at how many calories were in 30 grams of fat.– Y=12.63(30 grams of fat) + 200.03 = about 579

calories.

Conclusion• As a group, we have decided that the more

grams of fat within fast food french fries, the calories increase substantially.

• From the 11 fast food restaurants we observed, we came to the conclusion that In-and-Out Burger has the lowest calories and grams of fat.