Name(s):                                                ,                                              ,  

Math 203 Normal Data Activity


  1. Using the ruler on the bottom of this page, measure the length (in inches) of each group members middle finger.
  2. Record your data on the board and produce a histogram of the class data set. Does the data appear to be mound shaped?

    3.  

     
     
     
     
     
     
     
     
     
     
     
     

  3. Calculate the mean and standard deviation of the class data set and record them below.

    4.  

     

    mean =

    std dev =
     
     
     
     
     

  4. What proportion of the data lie within 1 standard deviation of the mean (from x-bar minus s to x-bar plus s)?

    5.  

     
     
     
     
     

  5. What proportion of the data lie within 2 standard deviations of the mean?

    6.