100 people asked which type of coffee is preferred?
Use this simulation to introduce the ideas of the randomness of a sample proportion, the error when it is used to estimate a population proportion and the error distribution.
In practice, the population proportion is unknown, so we only have a single estimate — the sample mean.
In practice, we cannot determine the error in this estimate.
Since this is a simulation, we can cheat! Click Peak at population to display the actual population proportion and sampling error.
Click Another sample several times to build up the sampling distribution of the estimation error.
The context of this simulation is that 100 people are asked which of two types of coffee is preferred.