Math Scatterplots

The number of hours spent on math homework during one week and the math exam grades for eleven students in Ms. Smith’s algebra class is plotted on the scatter plot. Based on the plotted data, what is the correlation between the time spent on homework and the exam grade?

• positive

• negative

• no correlation

• cannot be determined

The scatter plot below represents the relationship between the number of peanuts a student eats and the student's bowling score. Which conclusion about the scatter plot is valid?

• There is almost no relationship between eating peanuts and bowling score.

• Students who eat more peanuts have higher bowling scores.

• Students who eat more peanuts have lower bowling scores.

• No bowlers eat peanuts.

The number of hours spent on math homework each week and the final exam grades for twelve students in Mr. Dylan's algebra class is plotted. Based on the line of best fit, which exam grade is the best prediction for a student who spends about 4 hours on math homework each week?

• 62

• 72

• 82

• 92

The scatterplot below shows the profit, by month, for a new company for the first year of operation. Kate drew a line of best fit, as shown in the diagram. Using this line, what is the best estimate for profit in the 18th month?

• $35,000

• $37,750

• $42,500

• $45,000

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

The owner of an arcade measured the outside temperature each Saturday at noon and recorded the number of people in the arcade. The scatter plot shows the data collected. Which description fits the data in the scatter plot?

• As temperature increases, more people come to the arcade.

• As temperature increases, fewer people come to the arcade.

• The number of people at the arcade is always the same.

• There is no relationship between temperature and the number of people at the arcade.

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles?

• 50 min

• 80 min

• 45 min

• 60 min

What is the trend for this scatter plot

• Negative

• Positive

• None

What relationship is shown in the scatter plot?

• As the cost goes down, the number sold goes down.

• As the cost goes up, the number sold goes down.

• As the cost goes down, the number sold remains the same.

• There is not relationship between cost and the number sold.

The scatterplot shows the number of minutes each student in a book club read during a week and the number of years the student has participated in the book club. What is the total number of minutes read by the students who have participated in the book club for 4 or 5 years?

• A) 450

• B) 390

• C) 90

• D) 80