Grade 12 Math: Scatter Plots Worksheet

This worksheet focuses on scatter plots, correlation, and lines of best fit for Grade 12 students.

Grade 12 Math Data and GraphingGraphing DataScatter Plots

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Includes

Multiple ChoiceFill in the Blanks2 Short AnswerTrue / False

Standards

CCSS.MATH.CONTENT.HSS.ID.B.6CCSS.MATH.CONTENT.HSS.ID.C.8CCSS.MATH.CONTENT.HSS.ID.C.9

Topics

scatter plotscorrelationline of best fitdata analysisgrade 12 math

7 sections · Free to use · Printable

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Grade 12 Math: Scatter Plots

Name:

Date:

Score:

Read each question carefully and answer to the best of your ability. Show all work where applicable.

1. Which type of correlation is indicated when the data points on a scatter plot generally rise from left to right?

Negative correlation

Positive correlation

No correlation

Curvilinear correlation

2. The strength of a linear relationship between two variables is measured by the:

Slope

Y-intercept

Correlation coefficient

Range

3. A scatter plot is a graph that displays the relationship between two variables.

4. The line of best fit, also known as the line, is used to model the trend in the data.

5. The following data represents the number of hours studied (x) versus the test score (y) for a group of students:

(2, 65), (3, 70), (4, 75), (5, 80), (6, 85), (7, 90)

Plot these points on the graph below and draw a line of best fit.

Describe the type and strength of the correlation shown in your scatter plot.

6. A correlation coefficient of -0.9 indicates a strong positive linear relationship.

True

False

7. Outliers in a scatter plot can significantly affect the slope of the line of best fit.

True

False

8. A researcher collected data on the average daily temperature (in °C) and the number of ice cream cones sold at a beach stand. The correlation coefficient was calculated to be 0.88.

Interpret what this correlation coefficient means in the context of the problem.