Scatter Plots Construction Correlation

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

What type of association does this scatter plot represent?

• positive linear association

• negative linear association

• no association

• nonlinear association

Determine the correlation coefficient of the given data:

• .9820

• -.9643

• -1.409

• .164

Based on the graph, if Joe earned $400, how many hours did he work?

• 15 hours

• 20 hours

• 25 hours

• 30 hours

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

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

• -1<r<1

• -1>r>1

• -1≤r≤1

• -1≥r≤1

If the correlation coefficient of a table of data is 0.85, what is true about the line of best fit?

• There is a weak, positive relationship

• There is a strong, positive relationship

• There is a weak, negative relationship

• There is a strong, negative relationship

Tags

CCSS.HSF-LE.A.1B

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases

• As x increases, y increases

• As x decreases, y decreases

Tags

CCSS.HSF-LE.A.1B

In a scatterplot of the average grade point of a high school student and the average hours that he/she spend on his/her homework, you expect to see:

• very little association

• a strong association

• a weak positive association

• a strong positive association

What kind of correlation?

• Positive

• Negative

• No