# Residual Plots: Definition & Example

Instructions:

question 1 of 3

### If the data point is at (3, 10.5) and the prediction equation is y = -6.1x + 12.5, what is the value of the residual for this data point?

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### 2. You gather data by measuring the head circumference and height of 7 babies. Both variables are measured in inches. Your data is represented in the table shown below. The prediction equation you find is Height = - 52.4 + 4.54(Circumference). Which plot represents the residual plot for your data set using this prediction equation?

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Assess your understanding of residual plots with this worksheet/quiz. The quiz will assess your ability to find the value for a residual with a given data point, as well as asking you to pick out a residual plot that shows that the prediction equation matches the data well.

## Quiz & Worksheet Goals

You'll be responsible for answering questions on these topics:

• Finding the best-fitting prediction equation for given data
• Determining the sum of squared residuals for given data

## Skills Practiced

• Problem solving - use acquired knowledge to solve residual plot practice problems
• Information recall - access the knowledge you've gained regarding how to find the sum of squared residuals
• Making connections - use your understanding of prediction equations to explain how they're associated with data and variables