CCSS.Math.Content.8.SP.A.1

The number of siblings you have and your weight. 

• Positive correlation
• Negative correlation
• No correlation
• All of the above

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CCSS.Math.Content.8.SP.A.1

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. 

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CCSS.Math.Content.8.SP.A.1

What type of correlation does this graph have?

• positive
• negative
• none
• all of the above

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CCSS.Math.Content.8.SP.A.2

CCSS.Math.Content.8.SP.A.1

In a scatterplot, an outlier...

• ...is something we didn't learn 8th grade
• ...is a puppet with a long nose named Pinocchio
• ...is a point that is far outside the main cluster of points/ordered pairs
• ...is a really naughty point who doesn't tell the truth when outside

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CCSS.Math.Content.8.SP.A.1

Shelia collected data on ticket sales for the homecoming dance.  If she plots the data on the scatterplot shown above, which equation best models the table?

• y = 4.22x + 20.98
• y = 4.22x - 20.98
• y = -4.22x + 20.98
• y = -4.22x - 20.98

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CCSS.Math.Content.8.SP.A.2

CCSS.Math.Content.8.SP.A.1

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

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CCSS.Math.Content.8.SP.A.1

What type of correlation does this graph have?

• positive
• negative
• none
• all of the above

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CCSS.Math.Content.8.SP.A.2

CCSS.Math.Content.8.SP.A.1

A perfect negative correlation has a correlation coefficient of ____. 

• 1
• -1
• 0

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CCSS.Math.Content.8.SP.A.2

CCSS.Math.Content.8.SP.A.1

In a scatterplot, an outlier...

• ...is Q1 - (1.5 x IQR) or Q3 + (1.5 x IQR) 
• ...is a puppet with a long nose named Pinocchio
• ...is a point that is far outside the main cluster of points/ordered pairs
• ...is a really naughty point who doesn't tell the truth when outside

Tags

CCSS.Math.Content.8.SP.A.1

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

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CCSS.Math.Content.8.SP.A.2

CCSS.Math.Content.8.SP.A.1