Outliers · Try It 2

The following table shows economic development measured in per capita income (PCINC).

$$\begin{array}{cccc}\text{Year}& \text{PCINC}& \text{Year}& \text{PCINC}\\ \text{1870}& \text{340}& \text{1920}& \text{1,050}\\ \text{1880}& \text{499}& \text{1930}& \text{1,170}\\ \text{1890}& \text{592}& \text{1940}& \text{1,364}\\ \text{1900}& \text{757}& \text{1950}& \text{1,836}\\ \text{1910}& \text{927}& \text{1960}& \text{2,132}\end{array}$$

(a) What are the independent and dependent variables?
(b) Draw a scatter plot.
(c) Use regression to find the line of best fit and the correlation coefficient.
(d) Interpret the significance of the correlation coefficient.
(e) Is there a linear relationship between the variables?
(f) Find the coefficient of determination and interpret it.
(g) What is the slope of the regression equation? What does it mean?
(h) Use the line of best fit to estimate PCINC for 1900 and for 2000.
(i) Determine whether there are any outliers.

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Statistics · §12.5 Outliers · Try It 2