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Module overview

Why test?

Three common uses

Null and alternative

Two kinds of wrong call

Confidence and alpha

Choosing a test

Tests for counts and rates

Tests for normal measurements

Tests for non-normal measurements

The seven steps

Reading the p-value

Worked example 1

Worked example 2

Worked example 3

Worked example 4

Using tests in DMAIC

Sustainability lens

Practise

Hypothesis practice: question 1 of 10

Hypothesis practice: question 2 of 10

Hypothesis practice: question 3 of 10

Hypothesis practice: question 4 of 10

Hypothesis practice: question 5 of 10

Hypothesis practice: question 6 of 10

Hypothesis practice: question 7 of 10

Hypothesis practice: question 8 of 10

Hypothesis practice: question 9 of 10

Hypothesis practice: question 10 of 10

Review game

Hypothesis testing crossword

Chapter 21 of the Green Belt handbook covers hypothesis testing. You will state a null and an alternative, set the risk of a wrong call, pick a test for your data, read a p-value, and explain the result in plain words.

Hypothesis Testing: Is the Difference Real?

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