Scatterplots and Correlation Coefficients

What type of correlation does the following scatterplot show?

• Positive
• Negative 
• None

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Which scatter plot shows no relationship?

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

Tags

CCSS.HSS.ID.B.6

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data.

• y = 1.5x + 12

• y = 12x + 1.5

• y = 0.67x - 8

• y = -8x + 0.67

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.2

CCSS.HSS.ID.C.7

Predict what the next point would be on the scatterplot.

• (30,100)
• (20,20)
• (10,0)

Tags

CCSS.HSS.ID.B.6

The annual profits for a company are given in the following table, where x represents the number of years since 1992, and y represents the profit in thousands of dollars. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest hundredth. Using this equation, estimate the year in which the profits would reach 378 thousand dollars.

• 2029

• 2014

• 2003

• 8753

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.C.7

What type of correlation does the following scatterplot show?

• Positive 
• Negative
• None

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Describe the correlation.

• Negative correlation

• No correlation

• Positive correlation

• Constant correlation

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

Which statement best represents this relationship?

• There is no relationship between the number of miles driven and the amount of gas remaining in the tank
• As the number of miles driven increases, the amount of gas remaining in the tank increases.
• As the number of miles driven increases, the amount of gas remaining in the tank decreases.
• A relationship cannot be determined from this scatter plot

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Based on the scatter plot, which statement best describes the trend?

• As the daily temperature increases, the number of beach visitors increases.

• As the daily temperature decreases, the number of beach visitors increases.

• As the daily temperature increases, there is no change in the number of beach visitors

• As the daily temperature increases, the number of beach visitors decreases

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Describe the correlation coefficient if

r = 0.90

• Positive, weak

• Positive, strong

• Negative, weak

• Negative, strong

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8