correlation and regression

Front

Describe the correlation in the graph shown.

Back

No Correlation

Front

Estimate the correlation coefficient for this scatterplot.

Back

r = 0.89

Front

Estimate the correlation coefficient for this scatterplot.

Back

r = -0.9

Front

Describe the relationship between the variables.

Back

Moderate negative correlation

Front

As x increases, y decreases.

Back

negative correlation

Front

As x increases, y increases

Back

positive correlation

Front

What type of correlation (association) exists between ice cream sales and shark attacks?

Back

Positive correlation

Front

Calculate a line of best fit for a person's foot length compared to their height in cm.

Back

y = 25.05 + 5.57x

Front

Using linear regression, find the equation of best fit for starting salaries of health care workers since 2000.

Back

y = 27541.812 + 839.721x

Front

Interpret the slope of the Least Squares Line Equation.

Back

As hours increases by one, income will increase by 31.45, on average.