Explore Coverage of Confidence Intervals
Confidence Interval for a Proportion
Confidence Interval for a Mean
Select Population Proportion (p):
Select sample size (n):
Choose Confidence Level (in %):
Select how many samples (of size 50) you want to draw from the population:
1
10
100
1,000
Draw Sample(s)
Reset
Options:
Display Barchart of Coverage
Method for Constructing Interval:
Large Sample (Wald Interval)
Agresti-Coull
Wilson Score
Exact (Clopper-Pearson)
Fix Random Seed (For Reproducibility)
Download Coverage Plot
Download Coverage Barchart
Select shape of population distribution
Skewed
Uniform
Bimodal
Bell-shaped
Build Own
Select Skewness
Select Range:
Select Shape:
Shape 1
Shape 2
Shape 3
Select Mean:
Select Standard Deviation:
Enter values, seperated by spaces, to build a distribution, or copy and paste from spreadsheet. The values will be used to find a smooth population distribution.
3 4 5 5 5 6 6 7 9
Select sample size (n):
Choose Confidence Level (in %):
Select how many samples (of size 30) you want to draw from the population:
1
10
100
1,000
Draw Sample(s)
Reset
Options:
Display Barchart of Coverage
Fix Random Seed (For Reproducibility)
Download Population Graph
Download Coverage Plot
Download Coverage Barchart