Topic 8.5 how to measurestatistic correlation

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STATISTICAL CORRELATION What & How By: Riska Mareitha

Transcript of Topic 8.5 how to measurestatistic correlation

Page 1: Topic 8.5 how to measurestatistic correlation

STATISTICAL

CORRELATION

What & How

By: Riska Mareitha

Page 2: Topic 8.5 how to measurestatistic correlation

Definition...

Statistical correlation is a statistical

technique which tells us if two variables

are related.

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RELATIONSHIP BETWEEN

VARIABLES

Correlation can tell you something about the

relationship between variables. It is used

to understand:

1. whether the relationship is positive or

negative

2. the strength of relationship.

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How to measure...

• COEFFICIENT OF CORRELATION

Statistical correlation is measured by what

is called coefficient of correlation (r). Its

numerical value ranges from +1.0 to –1.0.

It gives us an indication of the strength of

relationship.

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How to measure....cont’d

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How to measure....cont’d

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EXAMPLE...

Now let’s see the example here

Correlation sample.docx

NX_Errors - 8.5

NX_Errors - 8.5

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Topic 15 correlation spss

Topic 15 correlation spss

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Topic 15 correlation

Topic 15 correlation

solidThinking 8.5

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Weak positive correlation Weak negative correlation Strong positive correlation Strong negative correlation Q. Describe the correlation.

Weak positive correlation Weak negative correlation Strong positive correlation Strong negative correlation Q. Describe the correlation.

Correlation correlation

Correlation correlation