Scatterplots

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.HSF.LE.B.5

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.HSF.LE.B.5

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.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

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.EE.B.5

This scatter plot shows the average traffic volume and average vehicle speed on a certain freeway for 50 days in 1999.  Which statement best describes this relationship.

• As traffic volume increases, vehicle speed increases.
• As traffic volume increases, vehicle speed decreases.
• As traffic volume increases, vehicle speed increases at first, then decreases.
• As traffic volume increases, vehicle speed decreases at first, then increases.

Tags

CCSS.HSF.IF.B.4

Ms. Ochoa recorded the age and shoe size of each student in her physical education class.  This graph shows her data.  Which of the following statements about the graph is true?

• The graph shows a positive trend.
• The graph shows a negative trend.
• The graph shows a constant trend.
• The graph shows no trend.

Tags

CCSS.HSF-LE.A.1B

A group of friends recorded the time it took to ride their bikes around the park.  This scatter plot shows their results with the line of best fit.  Which is closest to the number of minutes it would take to complete 9 laps?

• 4
• 5
• 6
• 7

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Based on the line of best fit for the scatter plot, which of the following amounts is closest to the cost of a 110-minute phone call?

• $10

• $12

• $15

• $20

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Based on the scatterplot, what is the best prediction of the average amount of money spent on groceries for a household of 7 people?

• $240

• $190

• $160

• $300