Basic Statistics for DOE (1 day)

Day 1

Section 1 – Basic Statistics

• Population vs sample
• Descriptive statistics
  • Mean, variance and standard deviation
• Using Design-Expert to compute statistics
  • Mean and standard deviation

Section 2 – Interval Estimates

• Central limit theorem
• Confidence interval for the mean
• Prediction interval for a future outcome
• Tolerance interval for a proportion of the population
• Computing intervals using Design-Expert    

Lunch

Section 3 – Hypothesis Testing (two means)

• T-test
• One-way ANOVA (F-test)
• Paired t-test (blocking

Section 4 – One-Way ANOVA

• F-test for three (or more) means
• Video: Diet makes rats smarter
• Estimating required sample size (power)
• Exercise: An example! (putting it all together)

Section 5 – Review and Optional Exercise

• Video comparing rollers
  • Review: comparing two means
• Test your metal
  • Material comparison
  • How big of a sample
  • Answers (do NOT peek)
• DOE Support

 

See the public workshop schedule and the SDOE course description for further information.