8.13 Scatterplots Quizizz

The scatterplot shows the relationship between the number of tickets sold to a play and the number of weeks the play was in production.

What type of correlation does the scatterplot indicate?

• cannot be determined

• negative correlation

• positive correlation

• no correlation

Ms. Chambers asked her students how many minutes they spent studying for a test the night before the test was given. She found the time students spent studying and their grades had a positive correlation. Which scatterplot shows this correlation?

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Nhuy recorded the weight of her puppy as it grew over several months. She recorded the weights on the graph below.

According to this graph, how many pounds did her puppy weigh when it was 5 months old?

• 2

• 11

• 20

• 35

The scatterplot below shows the number of parking lots, x, and the number of cars parked, y, during the week.

What is the appoximate value of y if x = 12?

• 100

• 110

• 120

• 140

Mrs. Brown-Davis gave a survey to her Science class to compare the number of hours each student spent studying per week to their semester grade. The results of the survey are recorded in the graph.

Which claim concerning students in Mrs. Hollin's class is best supported by the data in the graph?

• As the number of hours spent studying increases, the semester grade increases.

• As the number of hours spent studying decreases, the semester grade increases.

• As the number of hours spent studying increases, the semester grade decreases.

• There is no relationship between the number of hours spent studying and te semester grade.

The value of a tractor used for farming depreciates over time. The graph shows the relationship between the value of a large diesel tractor with a list price of $150,000 and the number of years it has been in use.

What will the appoximate value of the tractor be in Year 5?

• $100,000

• $90,000

• $70,000

• $50,000

The relationship between average monthly temperatures and the cost of heating 15 homes from October to March is shown in the scatterplot below.

From the data collected, which statement best represents the relationship between the average monthly temperatures and the cost of heating the homes?

• As the temperature increased, the cost of heating remained constant.

• As the temperature decreased, the cost of heating decreased.

• As the temperature decreased, the cost of heating increased.

• As the temperature increased, the cost of heating decreased.

The scatterplot shows pairs of final exam grades (x,y) for a group of students.

Which phrase is the best description of the correlation between the mathematics exam grades and the English exam grades.

• strongly positive

• strongly negative

• neither positive or negative

• normal or standard