Scatter Plots and Correlation Relationships

Charlotte and Michael are analyzing the relationship between the number of hours studied and test scores. What does a scatter plot with a strong positive correlation look like?

• Points are scattered randomly

• Points form a line that slopes upward

• Points form a line that slopes downward

• Points form a horizontal line

Tags

CCSS.8.EE.B.5

A youth soccer team has eight players. The table shows the height and the weight of each of the eight players.

Which scatterplot best represents the data in the table?

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Tags

5.9B

Luna is analyzing a scatter plot of her monthly savings over the past year. Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

Benjamin is analyzing the relationship between the number of hours he studies and his test scores. Which of the following would be the most accurate equation for the scatter plot of his data?

• y = -2x - 7

• y = -x + 7

• y = 3x + 7

• y = 15x + 7

Tags

CCSS.8.EE.B.5

Mia is analyzing the relationship between the number of hours studied and the scores obtained in a test. What type of plot should she use?

• To display the distribution of a single variable

• To show the relationship between two variables

• To compare parts of a whole

• To track changes over time

Elijah is analyzing the relationship between the number of hours students study and their test scores. In a scatter plot of his data, what do the points represent?

• Categories of data

• Individual data points

• The mean of the data

• The median of the data

James is tracking his study hours and his grades. Which of the following best describes a positive correlation in his scatter plot?

• As one variable increases, the other variable decreases

• As one variable increases, the other variable also increases

• There is no discernible pattern

• The variables are unrelated

Anika is analyzing the relationship between the number of hours studied and test scores. What is the line called that is often added to a scatter plot to show the trend of the data?

• Histogram

• Bar line

• Line of best fit

• Axis line

Charlotte and Aria are analyzing the relationship between study hours and test scores. Which of the following is NOT a characteristic of a scatter plot they might use?

• It can show the strength of a relationship between variables

• It can show the direction of a relationship between variables

• It can show the frequency of data points

• It can show the spread of data points

Ava and Olivia are analyzing the relationship between the number of hours studied and test scores. In their scatter plot, what does it mean if the points are widely scattered?

• There is a strong correlation

• There is a weak correlation

• There is no correlation

• The correlation is perfect