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Misleading Correlations Examples

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I need help with a couple questions:

- An example of a misleading correlation and an example of a meaningful correlation.
- Explain the relationship between correlation and causation.

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The expert examines an example of a misleading correlation example.

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An example of a misleading correlation: suppose we have the sales' records for the apparel store in the past twelve months and meanwhile the records for the computer score are also available during the same periods.
Apparel sales ($1000) electronic sales ($1000)
Jan 20 30
Feb 23 34.5
Mar 26 40
Apr 30 44
May 33 47
Jun 35 49
Jul 38 52
Aug 40 59
Sep 42 62
Oct 44 68
Nov 50 74
Dec 55 78

After performing the correlation analysis in the EXCEL, we could ...

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