Stats review- Unit 3 test

What kind of correlation does this scatterplot show?

• negative correlation
• no correlation
• positive correlation

What type of correlation does this scatterplot represent?

• negative correlation
• no correlation
• positive correlation

The graph shows the relationship between the amount of gas in a car's tank after going on a trip.  Which is the closest to the amount that would be in the tank after traveling 50 miles?

• 9 gallons
• 11 gallons
• 14 gallons
• 10 gallons

The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding.  What is the equation of the line of best fit?

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

Tags

CCSS.HSF.LE.B.5

A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside.  Based on the trend line, about how many guests should be expected if the temperature is around 80°?

• 8,300
• 8
• 7,300
• 9,300

Looking at the graph, what is the correlation between the x and y variables?

• y increases as x increases
• y is constant
• y decreases as x descreases
• y decreases as x increases

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

Tags

CCSS.8.EE.B.5

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

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

Tags

CCSS.8.F.A.3

What type of association does this scatter plot represent?

• positive linear association
• negative association
• no association
• nonlinear association

Tags

CCSS.8.F.A.3

What type of association does this scatter plot represent?

• positive linear association
• negative linear association
• no association
• nonlinear association