Linear Regression Assessment

• Strong positive 
• Weak positive 
• Strong negative 
• Weak negative 

• Strong positive 
• Weak positive
• Strong negative
• Weak negative 

What type of correlation does this graph show?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation

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

What is the best prediction for the number of toppings of pizza if it cost $28?

• 16

• 54

• 11

• 26

Tags

TEKS.MATH.A.5C

The chart below tracts starting salaries for health care workers since the year 2000. Using linear regression, find the equation of best fit. Round decimals to 3 places.

• y = 839.721x + 27541.812
• y = 27541.812x - 839.721
• y = 27541.812x + 839.721
• y = 839.721x - 27541.812

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

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

The table shown is comparing a person's foot length to their height in cm. Which equation represents the data shown in the table?

• f(x) = 25.05x + 5.57
• f(x) = 5.57x + 25.05
• f(x) = -5.57x + 25.05
• f(x) = 5.57x - 25.05

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSS.ID.C.8

What is the line of best fit?

• f(x)= 5x+1.82
• cannot be determined
• f(x)= 1.82x + 5.02
• f(x)= 1.1x + 4.2

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Describe the correlation

• positive

• negative

• no correlation

• strong

• weak