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CodeSignal

Measuring Spread and Variability

via CodeSignal

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Overview

You'll learn what variability means and how to measure it using range and interquartile range. By comparing these two measures, you'll understand what each one reveals about how consistently data values cluster together and when each is most informative.

Syllabus

  • Unit 1: Understanding Variability and Range
    • Comparing Data Spread
    • Finding Range From Prices
    • Reading Range From Data
    • Explain What Range Misses
  • Unit 2: Finding Data Quartiles
    • Complete The Quartile Statements
    • Find Quartiles From Data
    • Finding Quartiles From Data
    • Finding Quartiles From Data
  • Unit 3: Calculating the IQR
    • Find The Interquartile Range
    • Find The Interquartile Range
    • Interpreting Interquartile Range
    • Explain Weekly Spending IQR
  • Unit 4: Comparing Range and IQR
    • Complete The Range And IQR
    • Choosing Range or IQR
    • Justify The Better Measure

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