Scatterplots and Trend Lines Review

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

Tags

CCSS.8.EE.B.5

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which best describes the dependent variable, y?

• Number of books read

• Grades in English

• Book Reading and English Grades

• 120 or 40

Tags

CCSS.HSF-LE.A.1B

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

• 65

• 92

• 70

• 76

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours

• 35 hours

• 45 hours

• 15 hours

Tags

CCSS.HSF.IF.A.2

Which point on the scatter plot represents a hamburger that has 19 grams of fat and 400 Calories? 

• Point A 

• Point B

• Point C

• Point D

The scatter plot shows climate data for 10 cities on a certain day. Use the scatter plot to identify which of these statements is false. 

• The temperature was at least 22 degrees in 4 cities

• Two cities got exactly 10 mm of rain

• None of the cities got more than 20 mm of rain

• None of the statements are false

Tags

CCSS.HSF.IF.B.4

Mr. Thomas wanted to know if the amount of class time that he gave students to study affected their test scores. The scatterplot shows the results. What kind of relationship between class study time and test scores is shown on the scatter plot?

• No correlation

• Positive then negative correlation

• Positive correlation

• Negative correlation

Tags

CCSS.HSF.LE.B.5

A group of friends recorded the time it took to ride their bikes around the park. The scatterplot shows their results with the line of best fit.

Using the line of best fit, which is closer to the number of minutes it would take to complete 9 laps?

• 4

• 5

• 6

• 7

Tags

CCSS.8.EE.B.5

Oren plants a new vegetable garden each year for 14 years. The scatterplot shows the relationship between the number of seeds he plants and the number of plants that grow. Which number best represents the slope of the line of best fit through the data?

• -10

• -1/10

• 1/10

• 10

Tags

CCSS.8.EE.B.5

Which equation could describe the line of best fit for the graph?

• y = 5x + 236

• y = -5x + 236

• y = 1/5 x + 236

• y = -1/5 x + 236

Tags

CCSS.8.EE.B.5