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Combining Tools of the Past and Present

The i-test

Joel Smith
Thu, 08/06/2015 - 14:57
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Just 100 years ago, very few statistical tools were available and the field was largely unknown. Since then, there has been an explosion in available tools, as well as ever-increasing awareness and use of statistics.

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Although most readers of this column are looking to pick up new tools or improve their use of commonly applied ones, I thought it would be worth stepping back and talking about one that was used before we had so many options at our disposal: the i-test.

Like most early analysis tools, the i-test had to be simple to calculate because computers weren’t available. It returned a binary response—“pass” or “fail” in most cases—that was usually meant to confirm or deny some prior assumption. This equates to what we call the null and alternative hypotheses today.

However, even without a calculator or computer, in most cases this test was lightning-fast to use and virtually any employee had it at their disposal, unlike current statistical tools.

 …

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Comments

Submitted by kkbari on Thu, 08/06/2015 - 09:58

Love it...

I preach til I'm blue in the face with my students to look at the data first before doing any statistical analysis.  Love the concept.  Incorporating immediately into my teaching and coaching.

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Submitted by jimszteiter on Thu, 08/06/2015 - 10:25

Past Tools

Common sense or practical knowledge still are key ingredients in everything. There is no information more valuable that the words for the expexts, the people who perform the task to put everything into perspective.

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Submitted by dkhays on Thu, 08/06/2015 - 13:57

i-test

What is the i-test?  I have never heard of it.

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Submitted by bdaniels on Fri, 08/21/2015 - 10:27

In reply to i-test by dkhays

i-test

 i-test = EYE test.  look at your data first.

he explainsin the second to last sentence

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