27  Statistics

27.1 Learning objectives

  • Distinguish a population, a sample, a parameter, and an estimate.
  • Summarize a sample and describe uncertainty in an estimate.
  • Recognize how study design affects interpretation.

27.2 Populations and samples

27.3 Descriptive statistics

27.4 Parameters and estimates

27.5 Sampling variability and standard errors

27.6 Confidence intervals

27.7 Study design and interpretation

27.8 Worked example

27.9 Hands-on practice

27.10 Checkpoint

27.11 Further study