A list of college wrestling champions for the years 1981-2005 is given in the table. Each college has been associated with a particular letter. Use this data to complete parts (a) through (d).

A   E   D   D   A

E   D   B   A   A

E   C   C   C   C

E   C   B   C   E

E   B   D   C   D

 

  • Determine a frequency distribution.
  • Obtain a relative-frequency distribution.
  • Draw a pie chart.
  • Construct a bar chart.

 

 

 

 

 

 

 

 

 

  1. The class levels of the students in a particular class are shown to the below, where Fr, So, Jr, and Sr. denote freshman, sophomore, junior, and senior, respectively. Use this data to complete parts (a) through (d).

Fr  Fr  Sr  Sr  So  Jr  Jr  Jr

Jr  Sr  Sr  Fr  Fr  Sr  Fr  So

Sr  Jr  Sr  Fr  Fr  Jr  Fr  Jr

Fr  Sr  Jr  Fr  Sr  Fr  Jr  Fr

So  So  Fr  Jr  Jr  Fr  Sr  So

  • Determine a frequency distribution.
  • Obtain a relative-frequency distribution.
  • Draw a pie chart.
  • Construct a bar chart.

 

 

 

 

 

  1. A simple quantitative data set has been provided. Use limit grouping with a first class of 0-4 and a class width of 5 to complete parts (a) through (d) for this data set.

4   2   23   9   12   5  15   7   2   1

22  8  28  20  18  0  24  26   20  1

  • Determine a frequency distribution
  • Obtain a relative-frequency distribution
  • Construct a frequency histogram based on your result from part (a).
  • Construct a relative-frequency histogram based on your result from part (b).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. Create a dotplot for the data.

1   2   2   1   1   1

4   1   3   0   1   0

 

 

 

 

 

  1. A quantitative data set is provided in the table. Construct a stem-and-leaf diagram for the data. Using one line per stem.

69  54  34  56  49  21  42  55  39  58

 

 

 

 

 

 

 

  1. A smooth curve that represents a distribution is provided. Use this curve to do the following.
  • Identify the shape of the distribution with regard to modality.
  • Identify the shape of the distribution with regard to symmetry (or nonsymmetry).
  • If the distribution is unimodal and nonsymmetric, classify it as either right skewed or left skewed.
  •                                               (2)

 

 

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