Confidence Interval for a Proportion
A confidence interval gives a range of estimates for an unknown parameter.
Resources
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Visualization of confidence intervals for proportions:
Confidence Intervals for a Proportion
This applet allows users to drag sliders to change the population proportion, confidence level and sample size. The applet helps users visualize the meaning of the phrase "C% confidence," by showing that C% of the samples result in confidence intervals that contain the true parameter value.
Author: Statistical Applets.
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Intuiting confidence intervals for a proportion:
Simulating Confidence Intervals for a Proportion
Similarly to the previous resource, this applet also simulates many confidence intervals for a proportion. The applet includes detailed instructions and an associated activity.
Author: © 2019 Pearson Education Inc. All rights reserved.