Grade 9 Math: Introduction to Regression

This worksheet introduces Grade 9 students to the concept of regression, focusing on identifying relationships between variables, drawing lines of best fit, and making predictions.

Grade 9 Math Probability and StatisticsRegression

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Includes

Multiple ChoiceFill in the BlanksShort AnswerCustomTrue / False

Standards

CCSS.MATH.CONTENT.HSS.ID.B.6CCSS.MATH.CONTENT.HSS.ID.B.6aCCSS.MATH.CONTENT.HSS.ID.B.6c

Topics

regressionscatter plotline of best fitcorrelationstatistics

7 sections · Free to use · Printable

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Introduction to Regression

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Read each question carefully and answer to the best of your ability. Show all your work for short answer questions.

1. Which type of graph is typically used to display the relationship between two quantitative variables?

Bar graph

Histogram

Scatter plot

Pie chart

2. When points on a scatter plot generally rise from left to right, it indicates a correlation.

3. The line that best represents the trend in a scatter plot is called the .

4. Describe what a 'line of best fit' represents in the context of a scatter plot.

5. Consider the following data showing the number of hours studied (X) and the test scores (Y) for 5 students:

Student 1: (2, 60) Student 2: (3, 70) Student 3: (4, 80) Student 4: (5, 85) Student 5: (6, 90)

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

b) Based on your line of best fit, predict the test score of a student who studied for 7 hours.

6. A negative correlation means that as one variable increases, the other variable also increases.

True

False