Bivariate Data and Linear Regression Review

A person travels by car.  They record their miles driven in a data table.  Calculate the linear regression equation of this data.

• y = 61.93x - 1.79
• y = -1.79x + 61.93
• y = 0.016x + 0.03
• y = 0.03x + 0.016

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

A person travels by car.  They record their miles driven in a data table.  Identify the x-variable (input) of the data.

• Time (hours)
• Distance (miles)

Tags

CCSS.6.EE.C.9

A person travels by car.  They record their miles driven in a data table.  Identify the y-variable (output) of the data.

• Time (hours)
• Distance (miles)

Tags

CCSS.6.EE.C.9

The linear regression equation for the data is  y = 1.5x + 12.  Interpret the y-intercept of the equation.

• The y-intercept is (0, 12).  It means that a pizza with 0 toppings will cost 12 dollars.
• The y-intercept is 12.  It means that it costs 12 dollars per topping.
• There are 12 toppings.
• There are 12 pizzas.

Tags

CCSS.HSF.LE.B.5

The linear regression equation for the data is  y = 1.5x + 12.  Interpret the slope of the equation.

• The slope is (0, 1.5).  It means that a pizza with 0 toppings will cost 1.5 dollars.
• The slope is 1.5.  It means that it costs 1.5 dollars per topping.
• There are 1.5 toppings.
• There are 1.5 pizzas.

Tags

CCSS.HSF.LE.B.5

Describe the relationship between the variables.

• no correlation
• strong positive correlation
• strong negative correlation
• weak positive correlation

Tags

CCSS.HSS.ID.B.5

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

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.HSF.LE.B.5

Scatterplots show trends in data.

• True
• False

Tags

CCSS.HSF.IF.B.4

What would be the correlation between study time and test grades?

• positive
• negative
• none
• cannot be determined