Unit 2 interactive

Sampling & Bias Simulator

Hold a population fixed, change the sampling method and sample size, and watch a mathematically correct estimate become misleading.

Correct math can describe a bad sample

Keep the population fixed. Change only the selection process and watch the conclusion move.

Population mean63.8

Sample mean68.9

Error+5.1

Sample24/120

Sample size24Sampling method

Population120 fictional observations

Filled = selected

Population

Sample