Scatter Plots WarmUp

The police department tracked the number of ticket writers and number of tickets issued for the past 8 weeks.  The scatter plot shows the results.  Which statement is true?

• More ticket writers results in fewer tickets issued.
• There were 50 tickets issued every week.
• When there are 10 ticket writers, there will be 800 tickets issued.
• More ticket writers results in more tickets issued.

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.1

CCSS.8.SP.A.2

CCSS.8.SP.A.3

Mr. Thomas wanted to know if the amount of class time that he gave students to study affected their test scores.  What kind of relationship between class study time and test scores is shown on the scatter plot.

• No correlation
• Positive correlation
• Negative correlation
• Positive then negative correlation

Tags

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

A fifth grade class conducted a 5-minute experiment that involved heating time and water temperature.  The results of the experiment are represented in this line graph.  What prediction can be made based on the information gathered?

• The water temperature remains the same as the heating time continues.
• The water temperature decreases as the heating time continues.
• A pattern cannot be determined between these measurements.
• The water temperature increases as the heating time continues.

Tags

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

CCSS.8.SP.A.3

The scatter plot shows the number of absences in a week for classes of different sizes.  Trevor concluded that there is a positive correlation.  Which statement best describes why Trevor's conclusion was incorrect.

• The largest class does not have the most absences.
• The smallest class does not have the least number of absences.
• The data show no relationship between class size and number of absences.
• The data show a negative relationship between class size and number of absences.

Tags

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

This scatterplot could show the relationship between which two variables?

• speed of an airplane (x) vs. distance traveled in one hour (y)
• outside air temperature (x) vs. air-conditioning costs (y)
• age of an adult (x) vs. height of an adult (y)
• distance traveled (x) vs. gas remaining in the tank (y)

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.1

CCSS.8.SP.A.2

Which graph best shows a positive correlation between the number of hours studied and the test scores?

• Graph A
• Graph B
• Graph C
• Graph D

Tags

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

What type of correlation (association)?
The outside temperature and the amount of layers you wear. 

• Positive correlation
• Negative correlation
• No correlation

What type of correlation?
The temperature outside and the amount of ice cream sales. 

• Positive correlation
• Negative correlation
• No correlation

What is the type of association?

• Negative 
• no association
• positive 

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases
• As x increases, y increases
• As x decreases, y decreases
• No relationship