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Top 3 Tips for
Effective Data
Classification
Lee Baker
CEO
Chi-Squared Innovations
Tip 1: Keep a Code Sheet
Do you understand
these data?
(no, me neither…)
What if I gave you a
codes sheet?
(that’s better…)
Tip 2: Identify Your Data Types
Data
Quantitative
Ratio Interval
Qualitative
Ordinal Nominal
Data type tells you which calculations you can and cannot do:
Ordinal NominalRatio Interval
Median
Mean
Mode
most appropriate measure of centrality
Tip 3: Check That Your Data are Sensible
Negative Age
Too Tall!
Illegal Values
Thank You
Get more kick ass data ninja skills here:
(totally FREE!)
bit.ly/3TipsDataClass

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Top 3 Tips for Data Classification

  • 1. Top 3 Tips for Effective Data Classification Lee Baker CEO Chi-Squared Innovations
  • 2. Tip 1: Keep a Code Sheet Do you understand these data? (no, me neither…)
  • 3. What if I gave you a codes sheet? (that’s better…)
  • 4.
  • 5. Tip 2: Identify Your Data Types Data Quantitative Ratio Interval Qualitative Ordinal Nominal
  • 6. Data type tells you which calculations you can and cannot do: Ordinal NominalRatio Interval Median Mean Mode most appropriate measure of centrality
  • 7.
  • 8. Tip 3: Check That Your Data are Sensible Negative Age Too Tall! Illegal Values
  • 9.
  • 10. Thank You Get more kick ass data ninja skills here: (totally FREE!) bit.ly/3TipsDataClass