This Concepts introduces students to using and interpreting confidence intervals.
Explains the meaning of a confidence interval and how it is useful in estimating a population mean.
Explains what each item in the confidence interval formula means and how to create an interval just from the formula.
Shows how you can use a formula to calculate the sample size needed in order to have a certain margin of error in the estimation of the population mean.
Uses a software to show how the entire confidence interval changes when you adjust each component inside the formula.
Find out why elections are often called before all the votes have been tallied.
A simulation creating random confidence intervals based off of true statistics.
A simulation creating confidence intervals based off of a true proportion.