Using Dr. Chen's data, do the following in the context of data analysis (5 points): a. Create the appropriate graph (by hand) that visualizes the . statistical relationship between completion time and errors b. Calculate the correlation between the completion time and. errors c. Explain in one sentence why it is important to inspect a graphical visualization of the statistical relationship before calculating the coefficient d. Calculate how much of the variability in spelling errors is. . explained or accounted for by the variability in completion