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Math Help - analyzing the graph

  1. #1
    Junior Member
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    analyzing the graph

    Hi

    • The question is: (data was given for gender and speed)
      Produce an appropriate graph to determine if it is reasonable to assume that the speeds,for each gender, can be modelled by a normal distribution. Comment on what your graphs suggest.

      So I draw a graph(I think is appropriate for this question)- normal distribution


      Now, I need to make a comment based on the graph.
      Can I say: since most data are within the 95% interval line, the data is normally distributed???

      Please help





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  2. #2
    Senior Member MaxJasper's Avatar
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    Lightbulb Re: analyzing the graph

    From graph usually it is hard to verify accurately if distribution is normal or not. It is better to perform a statistic test to verify it. Example: Kolmogorov-Smirnov Test indicates that GLUCF is not normally distributed at p=0.05 sig level:

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