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Learn Statistics | Audio
4 minutes | Nov 20, 2010
What is Statistical Power?
Definition of power and a discussion of associated sample size issues.
4 minutes | Nov 13, 2010
The advantages of a paired t-test over a two-sample t-test, and when such an approach is valid.
3 minutes | Nov 6, 2010
What are Confidence Intervals?
Discusses the history and some controversial elements of onfidence intervals.
4 minutes | Oct 30, 2010
Interpretation and practical use of R-squared
3 minutes | Oct 23, 2010
Comparing and contrasting various R-squared statistics. Includes details on computing Predicted R-Squared.
11 minutes | Oct 16, 2010
Control Charts Discussion
Everything you wanted to know about control charts (but were afraid to ask).Topics include: choosing the right chart, how to take a rational subgroup, creating trial control limits, why 3 standard deviations?, other types of control charts.
5 minutes | Oct 9, 2010
What are Control Charts?
Key ideas behind control charting.
3 minutes | Oct 2, 2010
One Sided vs. Two-Sided Tests
Discusses the implications of using one vs. two sided alternative hypotheses in statistical tests.
4 minutes | Sep 25, 2010
Outliers in Boxplots
Outlier identification and Boxplots
5 minutes | Sep 18, 2010
The Poisson Distribution
A description and illustration of when and where this probability distribution may be used.
6 minutes | Sep 11, 2010
What are Fractional Factorial Designs?
Discussion of this useful technique for screening experiments.
5 minutes | Sep 4, 2010
The Normal Distribution
Description and example of using the Normal (Gaussian) distribution in practice.
5 minutes | Aug 28, 2010
Testing for Normality
Understanding the effect of sample sizes on tests for specific probability distributions.
5 minutes | Aug 21, 2010
Comments on the robustness of certain statistical procedures to Normality.
0 minutes | Aug 14, 2010
Statistical vs. Practical Significance
This Podcast addresses key differences between statistical and practical significance for inferential tests.
5 minutes | Aug 7, 2010
What Are Moving Range Charts?
An explanation of the use and interpretation of Moving Range (MR) charts for process monitoring.
5 minutes | Jul 31, 2010
Moving Ranges and Cpk
Sorting Data and Capability Analysis. This short Podcast answers a question on how higher valued capability estimates, such as Cp and Cpk, can be obtained when sorting data - and why you SHOULD NOT do this.
5 minutes | Jul 24, 2010
A general discussion on when and why acceptance sampling is used.
5 minutes | Jul 17, 2010
Discussion of TOST (two one sided t tests) and why traditional approaches are inappropriate for testing equivalency.
3 minutes | Jul 10, 2010
Blocking in Designed Experiments
A discussion of the benefits from blocking in experimentation.
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