Making a positive AND a negative sloping line to describe the shape would mean the data has both positive and negative trend, which is impossible because a bivariate data So those are the residuals, but how do we plot it? So right here you have a regression line and its corresponding residual plot.

Opswat safeconnectprogram (e.g., Excel) and copy the data to the clipboard. Include a rst line that has the variable labels. Paste it into psych using the read.clipboard.tab command: R code myData <- read.clipboard.tab() \end{Rnput} \item Make sure that what you just read is right. Describe it (section~\ref{sect:describe}) and perhaps look at the first and last ...

It displays plot, statistics, residuals, residuals plot, and regression comparison in its results window. You can select a plot type from scatterplot and histogram to visualize results. To plot a regression analysis graph, you can select a desired method such as Ordinary LS, RMA, Robust, Prais-Winsten, etc.