Lesson 14: Review for Exam 3

October 19, 2026

Review:

  • Proportions
  • Exam 3 on Wed

Presentation:

  • Topics
    • Census
    • Sampling
    • Sampling Distributions
    • Central Limit Theorem
    • Estimation
      • Confidence Intervals = Point estimate +/- Margin of error
      • Z-table
      • t-distribution for small samples
      • Inference for Proportions
  • Problem Types
    • Mean estimation with large sample (n>30)
    • Mean estimation with small sample (n<30)
    • Proportion estimation

Activity:

Justin

Justin Holman is CEO of Aftermarket Analytics, where he leads efforts to develop cutting edge sales forecasting and inventory optimization technology for the Automotive Aftermarket. Prior to joining Aftermarket Analytics, Justin managed corporate consulting for the Strategy & Analytics division at MapInfo Corporation, leading major projects for retail clients including The Home Depot, Darden Restaurants, Bridgestone-Firestone, Sainsbury’s and New York & Company. Before that, Justin served as Vice President of Software Development at LogicTools, now part of IBM's supply chain application software group. Justin holds a B.A. from Claremont McKenna College, a Ph.D. from the University of Oregon and an Executive Management certificate from Northwestern University's Kellogg School of Management.

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