Data in a Table and Scatter Plots

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data.

• y = 3/2x + 12

• y = 12x + 1.5

• y = 2/3x - 8

• y = -8x + 0.67

• y = 2/3x + 12

Tags

Statistics

Line of Best Fit

What type of correlation does this scatter plot show?

• positive linear association

• negative linear association

• no association

• exponential association

• quadratic association

Tags

Statistics

Scatter Plots

In this image, how would you describe the point that does not fit the pattern of the other dots?

• The point is a linear model.

• The point is an outlier.

• The point is the range.

• The point is the median.

• The point is the vertex.

Tags

Statistics

Scatter Plots

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

• 25 hours

• 35 hours

• 45 hours

• 15 hours

• 30 hours

Tags

Statistics

Scatter Plots

Estimate the correlation coefficient

• r= -0.9

• r= 0.9

• r=-0.5

• r=0.5

• r= 0.1

Tags

Statistics

Scatter Plots

Which sentence(s) describes the relationship shown on this scatterplot?

• As the temperature decreases, the visitors increase.

• As the temperature increases, the number of visitors increases.

• As the visitors increase, the temperature decreases.

• No correlation between temperature and visitors

• There is a positive correlation between temperature and visitors

Tags

Statistics

Scatter Plots

Describe the correlation in the graph shown.

• Strong Negative

• Strong Positive

• Weak Negative

• Weak Positive

What type of association does this graph have?

• positive

• negative

• none

• all of the above

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