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-   -   How to calculate the standard deviation STD ? (https://www.askmehelpdesk.com/showthread.php?t=573564)

  • Apr 29, 2011, 09:43 PM
    MimiStyle
    How to calculate the standard deviation STD ?
    3 students are randomly selected with replacement from this data set, and we are interested in the probability that a student attends XUniversity. If you were to create a probability distribution, i.e. P(k=0), P(k=1), P(k=2), P(k=3), what would the standard deviation be of this distribution? (Note: You do NOT need to calculate all of the probabilities in the distribution to find the mean and variance.)

    NOTE : The data for X university as follows :
    Frequency= 37
    Percent=61.7
    Valid Percent=61.7
    Cumulative Percent=61.7

    Thanks :)
  • May 2, 2011, 06:03 AM
    smoothy

    Read this first: Expectations for the Homework Help board
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