Intended for healthcare professionals

Endgames Statistical question

Continuous variables

BMJ 2008; 337 doi: (Published 03 September 2008) Cite this as: BMJ 2008;337:a196
  1. John Fletcher, clinical epidemiologist
  1. 1BMJ, London WC1H 9JR
  1. jfletcher{at}

    How would you best begin to explore the distribution of a continuous variable?

    • a) Scatter plot

    • b) Box plot

    • c) Histogram

    • d) Hypothesis test


    c—A histogram displays the frequency of all the data divided into suitable intervals.

    A histogram is perhaps the most commonly used graphical method of …

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