Scatterplots & Trend Analysis

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.
• The more books students read, the higher their English grade.
• The fewer books students read, the higher their English grade. 
• No relationship exists between the number of books students read and their English grades. 

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Which scatter plot shows a linear relationship between x and y?

• Graph A
• Graph B
• Graph C
• Graph D

Tags

CCSS.HSS.ID.B.6

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

A fifth grade class conducted a 5-minute experiment that involved heating time and water temperature. The results of the experiment are represented in this line graph. What prediction can be made based on the information gathered?

• As the time heated increases, water temperature decreases.

• The water temperature decreases as the heating time increases.

• A pattern cannot be determined between these measurements.

• The water temperature increases as the heating time increases.

The scatter plot shows the number of absences in a week for classes of different sizes.  Trevor concluded that there is a positive correlation.  Which statement best describes why Trevor's conclusion was incorrect.

• The largest class does not have the most absences.
• The smallest class does not have the least number of absences.
• The data show no relationship between class size and number of absences.
• The data show a negative relationship between class size and number of absences.

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

This scatterplot could show the relationship between which two variables?

• speed of an airplane (x) vs. distance traveled in one hour (y)
• outside air temperature (x) vs. air-conditioning costs (y)
• age of an adult (x) vs. height of an adult (y)
• distance traveled (x) vs. gas remaining in the tank (y)

Tags

CCSS.HSS.ID.B.6

What is the equation of the line of best fit?

• y = 3/2x
• y = 30x
• y = 30x + 300
• y = 3/2x + 300

What is the equation of the line of best fit? (Hint: READ THE UNITS ON THE AXIS)

• y = 750x + 9500

• y = -750x + 11000

• y = 3/4x + 11

• y = -3/4x + 11000

What is the equation of the line of best fit?

• y = -25x + 170
• y = -5/8x + 170
• y = 25x + 170
• y = 5/8x + 170

What is the line of best fit?

• y = 5/3x + 375
• y = 1/3x + 475
• y = 5/3x + 3
• y = 1/3x + 375