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For a sample of data, I got that the mean = 4.31 and the median = 4.42. Also, 36% of the values from the sample are less than the mean. Does this illustrate that the data is skewed left?

Will
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  • I would say "indicate" rather than "illustrate", though it may depend on your definition of skewness – Henry Sep 15 '15 at 09:15
  • Also, I found 4 outliers from a method using mean and standard deviation and 5 outliers (4 were the same as before) from a method using quartiles. Does this indicate that these outliers are not significant? – Will Sep 15 '15 at 09:17
  • Outliers is a different question: with mechanical identification it will depend on the underlying distribution and on sample size. – Henry Sep 15 '15 at 09:32
  • Can you help me understand this? – Will Sep 15 '15 at 10:10
  • 4.37 4.56 4.26 4.56 4.3 4.46 3.84 4.57 4.26 4.37 3.49 4.43 4.48 4.01 4.29 4.42 4.23 4.42 4.23 3.49 4.29 4.29 4.42 4.49 4.38 4.42 4.29 4.38 4.22 3.48 4.38 4.56 4.45 3.49 4.23 4.62 4.53 4.45 4.53 4.43 4.38 4.45 4.5 4.45 4.55 4.45 4.42 – Will Sep 15 '15 at 10:10
  • Those are the 47 values in the sample. I need help understanding: – Will Sep 15 '15 at 10:11
  • Check the number of outliers using the

    • mean and standard deviation and indicate how many outliers are identified. Compare the results using a outbox. What does this illustrate?

    – Will Sep 15 '15 at 10:11
  • What proportion of the

    • values are less than the mean? What does this illustrate?

    – Will Sep 15 '15 at 10:12
  • It is better to add data (and related questions) to your question (not in comments). – drhab Sep 15 '15 at 10:54