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12 November, 17:35

Given a normally distributed data set of 500 observations measuring tree heights in a forest,

what is the approximate number of observations that fall within two standard deviations

from the mean?

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Answers (1)
  1. 12 November, 20:13
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    Since we have the normally distributed data set of the 500 observations. hence, according to the formula there will be 95% of the total observation within two standard deviations from the mean.

    Hence, no. of observations will be = 95% of 500 = 95 * 5 = 475

    Also remember standard deviation is (Xi-X') ²

    The standard deviation is the measurement of the dispersion of the data set from the mean. And its quite important in Data science.

    Explanation:

    The answer is self explanatory.
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