Analyzing Scatterplots

1.

Explain how the number of
camp counselors is related to
the number of students in
each group at camp.

2.

About what would you expect
the number of students in
each group at camp to be if
there are 10 camp
counselors?

3.

What questions could you ask
about the graph?

Multiple Choice

Molly collected data about the number of hours students studied and their scores on a test. The results are shown in the scatterplot. Which statement about the data is true?

• As study hours increase, test scores decrease

• As study hours increase, test score increase

• As study hours increase, test score stay the same

• As study hours decrease, test score increase

Multiple Choice

Which is a reasonable prediction of a test score for a student who studied for $$\frac{1}{2}$$ hour?

• 80

• 100

• 50

• 5

Multiple Choice

Which relationship could be represented by this scatterplot?

• As the number of muffins in a box increase, the price increases

• As the speed of a car increases, the distance the car travels increases

• As the population of a city increases, the number of schools in the city increases

• As the number of daylight hours increases, the number of night hours decreases

Multiple Choice

As the area of a garden increases, what happens to the number of plants in a garden?

• The number of plants decreases

• The number of plants stays the same

• The number of plants increase faster

• The number of plants increase

Multiple Choice

Approximately how many fewer people were sledding when the outside temperatures was less than 30 degrees Fahrenheit?

• 335

• 105

• 325

• 130

Multiple Choice

What does the point (86,50) represent?

• 86 cold drinks were sold when it is 50 degrees outside

• 50 cold drinks were sold when it is 82 degrees

• When the temperature was 86 degrees, 50 cold drinks were sold

• When the temperature was 86 degrees outside, 86 drinks were sold

Multiple Choice

What conclusions can be drawn from this scatterplot?

• There is no correlation between age and participation in sports.

• As age increases, participation in sports generally decreases.

• As age decreases, participations in sports generally increases.

• People under 35 have more time for sports.

Multiple Choice

The scatterplot below shows movie theaters with different numbers of screens and their average weekly attendance. Based on the trend in the scatterplot, approximately how many people will be in attendance at the movie theater with 8 screens?

• 110

• 80

• 140

• 65

Multiple Choice

Tuan made the scatterplot below to show the relationship between his typing accuracy and his typing speed. Which statement best describes the relationship shown in this scatterplot?

• There is no relationship between Tuan's typing speed and his typing accuracy.

• As Tuan's typing speed increased, his accuracy remained constant.

• As Tuan's typing speed increased, his accuracy increased.

• As Tuan's typing speed increased, his accuracy decreased.

Multiple Choice

The scatterplot shows the average number of overcoats sold by a manufacturer during the last five years. Based on the information in the scatterplot, which statement is a valid conclusion?

• The average number of coats sold decreased as the temperature decreased.

• The average number of coats sold increased as the temperatures increased.

• The average number of coats sold remained constant as the temperature increased.

• The average number of coats sold decreased as the temperature increased.