Calculating Correlation Coefficient Using a Graphing Calculator

Calculating Correlation Coefficient Using a Graphing Calculator

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Quizizz Content

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This lesson teaches how to calculate the correlation coefficient using a graphing calculator. It reviews the conditions for using a linear correlation model, explains residuals and the best fit line, and provides step-by-step instructions for using a graphing calculator to calculate the correlation coefficient. The lesson also covers creating scatterplots and performing linear regression, concluding with an interpretation of the results.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the three conditions that must be satisfied before using the linear correlation model?

Two qualitative variables, a linear scatterplot, and outliers

Two quantitative variables, a linear scatterplot, and no outliers

Two qualitative variables, a non-linear scatterplot, and outliers

Two quantitative variables, a non-linear scatterplot, and outliers

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a correlation coefficient closer to 1 indicate?

A strong negative correlation

No correlation

A strong positive correlation

A weak negative correlation

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of minimizing the squares of residuals?

To find the line that has the most outliers

To find the line that is closest to zero

To find the line that minimizes the distance from the points

To find the line that maximizes the distance from the points

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which menu option on a graphing calculator is used to calculate the correlation coefficient?

Graph

Statistics

Geometry

Algebra

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correlation coefficient rounded to the nearest hundredth in the example provided?

0.90

0.87

0.88

0.89

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the form of the equation for the line of best fit in linear regression?

y equals a plus bx

y equals mx plus b

y equals ax squared plus bx plus c

y equals b plus ax

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the slope of the line of best fit represent in the context of the Monopoly example?

The number of spaces from Go

The total cost of the property

The decrease in cost per space

The increase in cost per space