PRM IV

5 Questions

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Statistical significance


Questions and Answers
  • 1. 
    The statistical significance of a result is the :
    • A. 

      Probability that the observed r'ship or difference in a sample didn't occur by chance

    • B. 

      Prob that the observed r'ship or difference in a sample occurred by chance and that in the pop'n from which the sample was drawn, no such r'ship exists.

    • C. 

      Prob of the result occuring again in the same sample

    • D. 

      None of the above

  • 2. 
    In simpler terms, the stat signif of a result tells us something about :
    • A. 

      The degree to which the result is false

    • B. 

      The degree to which the result cannot be explained

    • C. 

      The degree to which the result is true, in the sense of being representative of the pop'n

    • D. 

      None of the above

  • 3. 
    The significance level (p) tells us :
    • A. 

      The probability of error involved in rejecting the idea that the relation in question does not exist in the population

    • B. 

      The prob of error involved in rejecting the idea that the relation in ques does exist in the pop'n

    • C. 

      None of the above

  • 4. 
    The exact shape of the normal distribution is defined :
    • A. 

      As the standard bell curve

    • B. 

      By a function which has only 2 parameters: std dev and median

    • C. 

      By a function which has only 2 parameters: std dev and mean

    • D. 

      None of the above

  • 5. 
    P is:
    • A. 

      The prob of observing what you have in your sample by chance

    • B. 

      The prob of not observing what you have in your sample by chance

    • C. 

      The prob that the result is occurring in the pop'n