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IS THAT DIFFERENCE SIGNIFICANT?

ANALYTICS

• Scenario 3 - testing for significant differences between sample means
  • Scenario 1 - testing for significant differences on results based on the same sample
  • Scenario 2 - testing for significant differences on results from separate samples
  • Scenario 4 – testing the accuracy of a survey result

Example: is a mean satisfaction score of 7.7 (with a standard error of 0.35) significantly higher than a mean satisfaction score of 7.4 (with a standard error of 0.10)?

Answer: No it is not - at the 95% confidence level a difference of 0.67 is required - the observed difference is only 0.3

If you would like to run this test on your own data please use the calculator below.

	MEAN	STD ERROR
SAMPLE 1:
SAMPLE 2:
ACTUAL DIFF:
DIFF REQ'D:
IS DIFFERENCE SIGNIFICANT?
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• Introduction
• Understanding Loyalty
• Predicting Uptake
• Segmenting the Market
• Advanced Analysis Techniques
• Is That Difference Significant
• What is Insight?

RELATED LINKS

• Business Sector
• Qualitative