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Comparing Hypothesis Tests for Continuous, Binary, and Count Data

By Jim Frost 33 Comments

In a previous blog post, I introduced the basic concepts of hypothesis testing and explained the need for performing these tests. In this post, I’ll build on that and compare various types of hypothesis tests that you can use with different types of data, explore some of the options, and explain how to interpret the results. Along the way, I’ll point out important planning considerations, related analyses, and pitfalls to avoid. [Read more…] about Comparing Hypothesis Tests for Continuous, Binary, and Count Data

Filed Under: Hypothesis Testing Tagged With: choosing analysis, data types, interpreting results, quality improvement

Use Control Charts with Hypothesis Tests

By Jim Frost 15 Comments

Typically, quality improvement analysts use control charts to assess business processes and don’t have hypothesis tests in mind. Do you know how control charts provide tremendous benefits in other settings and with hypothesis testing? Spoilers—control charts check an assumption that we often forget about for hypothesis tests! [Read more…] about Use Control Charts with Hypothesis Tests

Filed Under: Hypothesis Testing Tagged With: assumptions, graphs, quality improvement

Lessons in Quality During a Long and Strange Journey Home

By Jim Frost Leave a Comment

Back in January of 2014, I didn’t expect that our family trip to Florida would end with me driving a plane load of passengers nearly 200 miles to their homes, but it did. [Read more…] about Lessons in Quality During a Long and Strange Journey Home

Filed Under: Fun Tagged With: quality improvement

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