Scatter Plots and Lines of Best Fit

Based on the scatterplot, which of the following conclusions about the relationship between her height and weight is true?

• There is a negative relationship between height and weight

• There is a positive relationship between height and weight

• There is a constant relationship between height and weight

• There is no relationship between height and weight

Answer explanation

The scatterplot shows a positive relationship between height and weight.

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

What type of correlation does this scatter plot show?

• positive

• negative

• no correlation

• nonlinear association

Answer explanation

The scatter plot shows a negative correlation, indicating an inverse relationship between the variables.

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase.

• As the temperature increases, the number of visitors increases.

• As the visitors increase, the temperature decreases.

• No correlation

Answer explanation

The scatter plot shows that as the temperature increases, the number of visitors also increases. This indicates a positive correlation between temperature and visitors.

Tags

CCSS.HSS.ID.B.6

The number of siblings you have and your weight. 

• Positive correlation

• Negative correlation

• No correlation

Answer explanation

The number of siblings and weight have no correlation.

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

Answer explanation

The graph has a negative association. This means that as one variable increases, the other variable decreases.

Tags

CCSS.HSF-LE.A.1B

What type of association does this scatter plot represent?

• positive linear association

• negative linear association

• no association

• nonlinear association

Answer explanation

This scatter plot represents no association. There is no clear pattern or relationship between the variables.

Tags

CCSS.HSS.ID.B.6

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A

• B

• C

• D

Answer explanation

The scatterplot C represents the relationship between the age of the car and its decreasing value.

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

Answer explanation

Yes, this line is an accurate line estimate of best fit for the data.

Tags

CCSS.8.EE.B.5

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y=2x+10

• y= 10

Answer explanation

The equation of the line of best fit is y = -2x + 10. This equation represents a line with a negative slope of -2 and a y-intercept of 10. It is the correct choice because it accurately represents the relationship between x and y in the given data.

Tags

CCSS.8.EE.B.5

Select the statement that best describes the line.

• The line is the line of best fit.

• The line is NOT a line of best fit because it does not pass through two points.

• The line is NOT a line of best fit because it does not go through the middle of the data set.

• The line is NOT a line of best fit because it does not go through the origin.

Answer explanation

The line is not a line of best fit because it does not go through the middle of the data set.

Tags

CCSS.8.EE.B.5