Scatterplots & Linear Regressions

Front

Scatter plot

Back

A graph that shows the relationship of two data sets

Front

What type of correlation describes the following sentence: The temperature outside and the number of hot chocolate sold at a football game?

Back

Positive

Front

What would be the correlation between Mathematics grade and the time it takes to run a mile?

Back

no correlation

Front

As the age of the car increases, its value decreases. Which scatter plot represents this relationship?

Back

Front

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

Back

As x increases, y decreases

Front

Describe the correlation if the correlation coefficient is r = -0.26.

Back

negative, weak

Front

Estimate the correlation coefficient: r = -1, r = -.5, r = - .8, r = .8

Back

r = - .8

Front

As the age of the car increases, its value decreases. Which scatter plot represents this relationship?

Back

Front

Scatter plot with r value of 0.5

Back

Front

r = 0.47. What is the strength of the correlation?

Back

weak