Scatter Plot

What is a scatter plot?

• A graph that shows the relationship of two data sets.

• A graph drawn using rectangular bars to show how large each value is.

• A graph that shows information that is connected in some way.

• A graph that shows data changing over time.

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 12 absences should get approximately what score on the final exam?

• 60

• 92

• 70

• 76

Which graph shows a line of best fit for the scatter plot?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.EE.B.5

For which scatter plot would the line of best fit be represented by the equation y = ½x + 2?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.EE.B.5

Which data will most likely show a negative correlation when graphed on a scatter plot?

• The outside temperature and the number of people wearing gloves.

• The distance a student lives from school and the amount of time it takes to get to school.

• The number of visitors at an amusement part and the length of the lines for the rides.

• A student's height and grade point average.

A researcher gathered data to predict the number of new types of plants (y) that will be in a state park after x years.  After making a scatter plot of the data, she determined the equation of a line of best fit to be
y = 0.25x + 8
Based on the equation, what is the number of new types of plants that will be in the park after 24 years?

• 8

• 14

• 32

• 64

Tags

CCSS.HSF.LE.B.5

Which equation could describe the line of best fit for this graph?

• y = 5x + 236

• y = -5x + 236

• y = 1/5x + 236

• y = -1/5x + 236

Based on the line of best fit for the scatter plot, which of the following amounts is closest to the cost of a 120-minute phone call?

• $10

• $12

• $15

• $20

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation

As x increases, y increases

• correlation coefficient

• causation

• positive correlation

• negative correlation