Asked by mike
                a quiz consists of 30 true or false questions. if the student guesses on each question, what is the standard deviation of the number of correct answers
            
            
        Answers
                    Answered by
            PsyDAG
            
    The Range Rule
The range rule tells us that the standard deviation of a sample is approximately equal to one fourth of the range of the data. In other words s = (Maximum – Minimum)/4. This is a very straightforward formula to use, and should only be used as a very rough estimate of the standard deviation.
    
The range rule tells us that the standard deviation of a sample is approximately equal to one fourth of the range of the data. In other words s = (Maximum – Minimum)/4. This is a very straightforward formula to use, and should only be used as a very rough estimate of the standard deviation.
                    Answered by
            Maria
            
    15
    
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