The following data represents the increase of Covid-19 cases in Washington State per day from Sept 20 - November 16 . Use units in your answers where appropriate and round all decimals (in answers and equations) to the hundredths place.
a.) Determine the equation of the regression line (round to 2 decimal places). (Write in y=a x+b form.)
b.) What is the r² value for the linear model?
c.) Find the quadratic regression model for the data in the form F(x)=A x^2+B x+C
d.) What is the r² value of the quadratic regression model?

Question

03-12-2022
Mathematics

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The following data represents the increase of Covid-19 cases in Washington State per day from Sept 20 - November 16 . Use units in your answers where appropriate and round all decimals (in answers and equations) to the hundredths place.
a.) Determine the equation of the regression line (round to 2 decimal places). (Write in y=a x+b form.)
b.) What is the r² value for the linear model?
c.) Find the quadratic regression model for the data in the form F(x)=A x^2+B x+C
d.) What is the r² value of the quadratic regression model?

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