Determine a model of the cost of stay in hospital (cost), which is dependent on the duration

Question:

Determine a model of the cost of stay in hospital (cost), which is dependent on the duration of stay in days (day).

Obtain the scatter plot—are any adjustments required?

Correlation coefficient =

R2 =

Model =

Standard errors of coefficients =

Obtain the residual plot and test residuals for normality.

Predict how much an eight-day and a twenty-day stay will cost—which will be the most reliable?

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