Learning Objectives

  • Define the three types of data distribution shapes.
  • Identify the shape of a distribution based on a comparison of the mean and median.
  • Describe the mode, the median, and the mean.
  • Explain which level(s) of measurement each measure of central tendency can be used with.
  • Identify, locate, or calculate the mode, the median, and the mean for a variety of variables and variable types.
  • Explain the difference between the two mean formulas and correctly use each one on the appropriate types of data.
  • Explain deviation scores and their relationship to the mean.
  • Use SPSS to produce the mode, the median, and the mean.