Analyze Scatterplot and Line of Best Fit

Which relationship is shown by this scatter plot?

• As the cost goes down, the number sold goes

  down.

• As the cost goes up, the number sold goes

  down.

• As the cost does down, the number sold

  remains the same.

• There is no relationship between cost and the

  number sold.

Tags

CCSS.HSF-LE.A.1B

Rohan, Isla, and Jackson are studying the relationship between the number of hours spent studying and the test scores of their classmates. What does a negative correlation in their scatterplot indicate?

• There is no relationship between the hours spent studying and test scores.

• As the number of hours spent studying increases, the test scores also increase.

• As the number of hours spent studying increases, the test scores decrease.

• As the number of hours spent studying decreases, the test scores also decrease.

Tags

CCSS.HSF.LE.B.5

What does a correlation coefficient close to -1 indicate in a scatterplot?

• No relationship

• Strong negative linear relationship

• Weak negative linear relationship

• Strong positive linear relationship

Jared collected data on the ages and heights of a random sample of elementary school students. If he plots the data on a scatter plot, what relationship will he most likely see between age and height?

• A negative correlation

• No correlation

• A positive correlation

• A constant correlation

Tags

CCSS.8.F.A.3

Which graph represents a positive correlation?

• 
• 
• 
• 

Sophia and Abigail are working on a project to analyze the relationship between the number of hours spent studying and test scores. Which type of data visualization should they use to display this relationship?

• A scatterplot is a type of data visualization that displays the relationship between two categorical variables.

• A scatterplot is a type of data visualization that displays the relationship between a numerical variable and a categorical variable.

• A scatterplot is a type of data visualization that displays the relationship between two numerical variables using a line graph.

• A scatterplot is a type of data visualization that displays the relationship between two numerical variables.

What does a correlation coefficient of 0 indicate in a scatterplot?

• Perfect positive linear relationship

• Weak positive linear relationship

• No linear relationship

• Perfect negative linear relationship

Tags

CCSS.HSF-LE.A.1B

What does the line of best fit represent in a scatterplot?

• The maximum value in the data

• The average of the data points

• The outlier points

• The trend in the data

How does sketching the line of best fit help in analyzing data in a scatterplot?

Tags

CCSS.8.EE.B.5

What is the purpose of sketching the line of best fit in a scatterplot?

• To represent the trend in the data

• To make the data look neat

• To show the average of the data points

• To confuse the viewer