Making Predictions from Scatter Plots: Grade 8 Quiz

A scatter plot shows the relationship between hours studied and test scores for 10 students. If a student studies for 5 hours, what score would you predict based on the trend?

• 50

• 75

• 60

• 90

In a scatter plot of daily temperatures and ice cream sales, the data shows a positive correlation. If the temperature rises to 85°F, how many ice creams do you predict will be sold if the trend continues?

• Only 10 ice creams will be sold at 85°F.

• Ice cream sales will remain the same regardless of temperature.

• Predicted ice cream sales at 85°F are expected to be significantly higher than at lower temperatures, but an exact number cannot be determined without specific data.

• Ice cream sales will drop significantly at 85°F.

A scatter plot illustrates the relationship between the number of hours spent on social media and grades in school. If a student spends 3 hours on social media, what might their grade be based on the data?

• A or B

• A and C

• C or D

• E or F

The scatter plot shows the correlation between the number of books read and the average reading score of students. If a student reads 10 books, what score would you expect them to achieve?

• 85

• 75

• 100

• 90

In a scatter plot comparing the amount of rainfall and the growth of plants, a positive correlation is observed. If there is 4 inches of rain, how much growth would you predict for the plants?

• Minimal growth of 1 inch

• Growth decreases with more rain

• Above average growth, specific value depends on data.

• No growth at all

A scatter plot displays the relationship between the number of workouts per week and weight loss. If a person works out 5 times a week, what weight loss can be predicted based on the data?

• The predicted weight loss for 5 workouts per week is 15 pounds.

• The predicted weight loss for 5 workouts per week is 2 pounds.

• The predicted weight loss for 5 workouts per week is X pounds.

• The predicted weight loss for 5 workouts per week is 10 pounds.

The scatter plot shows the correlation between the number of hours played in video games and the level of stress reported by students. If a student plays for 8 hours, what level of stress might they report?

• Extreme stress level

• Low stress level

• Moderate to high stress level

• No stress reported

In a scatter plot of car speed versus fuel efficiency, a negative correlation is observed. If a car is driven at 70 mph, what can you predict about its fuel efficiency?

• The fuel efficiency will be higher.

• The fuel efficiency will be lower.

• The fuel efficiency will remain the same.

• The fuel efficiency will be unpredictable.

A scatter plot shows the relationship between the number of hours spent on homework and students' final grades. If a student spends 2 hours on homework, what grade might they expect?

• A grade

• D grade

• No grade at all

• B or C grade, depending on the specific trend in the scatter plot.

The scatter plot illustrates the correlation between the number of friends on social media and feelings of loneliness. If a person has 150 friends, what might their loneliness score be based on the trend?

• 10-12

• 1-2

• 2-3

• 5-6