Khan Academy
Khan Academy: Interpreting Confidence Levels and Confidence Intervals
When we create a confidence interval, it's important to be able to interpret the meaning of the confidence level we used and the interval that was obtained.
Khan Academy
Khan Academy: Interpreting a Confidence Interval for a Mean
After we build a confidence interval for a mean, it's important to be able to interpret what the interval tells us about the population and what it doesn't tell us.
Khan Academy
Khan Academy: Interpreting a Z Interval for a Proportion
Once we build a confidence interval for a proportion, it's important to be able to interpret what the interval tells us about the population, and what it doesn't tell us. Let's look at few examples that demonstrate how to interpret a...
Khan Academy
Khan Academy: Reference: Conditions for Inference on a Proportion
When we want to carry out inferences on one proportion (build a confidence interval or do a significance test), the accuracy of our methods depend on a few conditions. Before doing the actual computations of the interval or test, it's...
Khan Academy
Khan Academy: Reference: Conditions for Inference on a Mean
When we want to carry out inference (build a confidence interval or do a significance test) on a mean, the accuracy of our methods depends on a few conditions. Before doing the actual computations of the interval or test, it's important...
Khan Academy
Khan Academy: Making a T Interval for Paired Data
In some studies, we make two observations on the same individual. For instance, we might look at each student's pre-test and post-test scores in a course. In other studies, we might make an observation on each of two similar individuals.
Wolfram Research
Wolfram Math World: Standard Deviation
This World of Mathematics site by Eric Weisstein explains the term "Standard deviation." Provides step-by-step help, examples, and charts.
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.
Other
Bellevue: Accuracy vs. Precision & Error vs. Uncertainty
A really nice distinction here in this longish piece from the Bellevue Community College. It's not just accuracy vs. precision, but also error vs. uncertainty. This is a necessary additional consideration for any paper on the topic.