Vision Use the measurements of visual acuity from the right eye and left eye as listed in Data Set 5 “Vision” in Appendix B. What is the best predicted measurement for the left ear given a reading of 50 for the right ear? Large Data Sets. Exercises 25–32 use the same Appendix B data sets as Exercises 25–32 in Section 10-1. In each case, find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted values following the prediction procedure summarized in Figure 10-5 on page 466.