Investigating Data, Line of Best Fit

Q1. What is the trend observed in the data?

• A) positive trend

• B) negative trend

• C) no trend

find line of best fit using calculator through these points (0,0)(1,2) (3,5) (6,7)

• y=65x+7

• y=1.14x+.64

• y=1.5x+64

Tags

CCSS.8.EE.B.5

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• 0.07 weak

• -0.26 weak

• -0.26 moderate

• 0.07 strong

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• -0.19 weak

• -0.19 moderate

• 0.04 weak

• 0.04 strong

The correlation coefficient is a number "r" such that: 

• -1<r<1

• -1>r>1

• -1≤r≤1

• -1≥r≤1

A perfect positive correlation has a correlation coefficient of ____. 

• 1

• -1

• 0

• positive trend
• negative trend
• no trend

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

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

which scatterplot shows the correct trend line (line of best fit) for the relationship showing the number of bags of chocolates that are sold and the price per bag?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5