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Jul 2, 2018 9:08 AM
(452 views)

Dear community,

I have three short questions about Pareto Plot of Estimates.

1. How is t Ratio calculated?

2. How can I interpret t Ratio?

3. The solid black line is cumulative of t Ratio; however, how can I interpret this line?

Thank you!

9 REPLIES

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Jul 2, 2018 10:55 AM
(441 views)

1. t ratio is the parameter estimate/ standard error of the parameter estimate.

2. t ratio is but one 'statistic' that can be used to evaluate the significance level of a given parameter estimate.

3. The curve is just the sum of the absolute values of the t ratio, it's main purpose is to give you an idea of the relative explanatory power of each estimate wrt to the others.

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Jul 2, 2018 11:19 AM
(434 views)

Thank you for your reply.

Is it possible to change from t-ratio to estimated effect instead?

Sincerely,

TK

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Jul 2, 2018 11:28 AM
(432 views)

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Jul 2, 2018 11:50 AM
(423 views)

Dan Obermiller

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Jul 2, 2018 12:17 PM
(415 views)

I understand your points. However, are there any ways that I can see let say which parameter has the greatest effect?

Sincerely,

TK

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Jul 3, 2018 3:24 AM
(389 views)

The Pareto Plot is one of the ways to assess statistical significance and decide which effects are not null. Examine the Parameter Estimates for importance. If the experiment was designed by JMP, then JMP saved a column property for each of the continuous factors called Coding. The estimates are based on the coded levels of the continuous and categorical factors. The estimates can be used directly to assess the magnitude of their associated effect.

Learn it once, use it forever!

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Jul 3, 2018 3:27 AM
(388 views)

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Jul 3, 2018 3:31 AM
(385 views)

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Jul 4, 2018 10:51 PM
(358 views)

Thank you for a very good effects plot.

Would it be possible to know which equation you use to calculate effects?

Sincerely,

TK