What is the difference between equal and unequal variance?

Amelia Brown | 2018-06-17 12:10:12 | page views：1259

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Works at the International Air Transport Association, Lives in Montreal, Canada.

Equal or unequal sample sizes, equal variance. This test is used only when it can be assumed that the two distributions have the same variance. (When this assumption is violated, see below.)

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Benjamin Turner

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: Student's t-test - Wikipedia
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