K300 Project 1-  Descriptive Statistics

Data due: Wed 9/22 or Tues. 9/21                         Value: 25 pts[5 point penalty for each class late]

Objective: Experience with gathering and presenting data, i.e. descriptive statistics.

Cut out the obituaries from the newspaper for ten days.  Keep these in an envelope to turn in with your project.  Gather data for 10 different days.  If you don't have at least 110 values, collect from more days.  Keep all the data, i.e., don't throw out data so that you have only 110 values.

I.     A.  Enter the data into the calculator in a list named AGES.
             You might wish to enter them each day.
        B.  Use the Sort feature of the TI-83 to arrange the data in increasing order.

        C.  Construct a Stem-and Leaf Plot of the ages.

        D.  Find the exact value of the Mean and Standard Deviation with the calculator.

        E.  Find two addition measures of the center:  Median, and Mode. Show any work necessary.

II.     A.  Construct a frequency table using the classes indicated:
 

Age Frequency Relative Frequency Cumulative Frequency
0-9      
10-19      
20-29      
30-39      
40-49      
50-59      
60-69      
70-79      
80-89      
90-99      
100-109      
    B.  Complete the Relative Frequency and Cumulative Frequency Columns.

    C.  Construct a Histogram.

    D.  Construct a Relative Frequency Histogram

    E.  Use the frequency table to find the mean and compare it to the mean computed from actual
         values in part I. D. Show your work

    F.  Use the frequency table to find the Standard Deviation and compare it to the calculator
         computed on in part I. D. Show your work.

    G.  If your frequency table and calculator values from parts I.D and II.E&F are different, why
         are  they different?

III.     A.  Find Q1, Q2, D3, and P45. Show any work necessary.

          B.  Construct a Box Plot of the data. Show any work necessary.