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Continual Improvement Process by V. Narayana, N. S. Sreenivasan

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CHAPTER 24

Analysis of Frequencies, Analysis of Variance, Regression and Correlation Analysis

He who knows not and knows not what he knows not, is a fool.Shun him.He who knows and knows not is simple.Teach him.He who knows, and knows not that he knows, is asleep.Wake him.He who knows that he knows what he knows, is wise.Follow him.

– Arab Proverb

SYNOPSIS

The logic and methodology of statistical tests of significance discussed in the previous chapter is extended in this chapter to cover comparison of results in more than two samples when data is in attribute type as well as measurement (variable) type. Method of analysis for attribute type is termed as ‘frequency analysis’ and that for measurement is referred to as ‘analysis of variance’. ...

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