To Notes

Normal Plots

Introduction

Normal Scores

Normal Plots

Normal Plots with R

Nonnormality

  1. Data are normal. All the points of the normal plot fall roughly on the reference line.
  2. Data are skewed to the left. The data are further away on the left and closer on the right than they would be if they were normal.
  3. Data are skewed to the right. The data are closer on the left and further away on the right than they would be if they were normal.
  4. The distribution of the data has thick tails. The data are further away on both the left and the right than they would be if they were normal.
  5. The distribution of the data has thin tails. The data are closer on both the left and the right than they would be if they were normal.