Two Variable Statistics

What is the direction of the scatter plot?

• Positive

• Negative

• Vertical

• Horizontal

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6

What is the correlation coefficient?

• 36.2

• .97

• .94

• 6.3

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6

What is the strength of the data?

• Strong positive

• Strong negative

• Weak positive

• Weak Negative

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CCSS.MATH.CONTENT.HSS.ID.B.6

What is the meaning of the slope?

• For each 6.3 hours increase in study time, your final exam grade will increase 1%

• For each 1 hour increase in study time, your final exam grade will increase 6.3%

• For each 1 hour increase in study time, your final exam grade will increase .97%

• Who cares? Studying does not effect your grade.

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6

What does the y-intercept mean in the data set?

• 0 hours of studying needed to attain a final grade of 6.

• 11 hours of studying needed to attain a final grade of 99.

• 36 hours of studying needed to attain a final grade of 0.

• 0 hours of studying needed to attain a final grade of 36.

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CCSS.MATH.CONTENT.HSS.ID.B.6

According to the Line of Best Fit, what would be the final exam grade of a student that

studies 7 hours for this exam?

• 81

• 43

• 95

• 22

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6

What is the residual for 7 hours of studying?

• 164.6

• -3.4

• -164.6

• 3.4

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6

According to the Line of Best Fit, how many hours should a student study in order to

make a 80 on the final exam?

• 6.9 hours

• 544 hours

• 9.2 hours

• 1 hour

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6

• -5.54

• 0.03

• -0.03

• 4.84

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6

What is the correlation coefficient for the Best Fit Linear model?

• 4.08

• 0.99

• 0.97

• 12.94

Tags

CCSS.MATH.CONTENT.HSS.ID.B.6