Organizing Data - Charts & Tables

When a set of data is collected it is often disorganized. By using charts or tables we can organize data.

3. Construct a frequency distribution chart for each of the four categories.

3a. How did you determine your beginning and ending numbers on your charts?
3b. What information can you readily see from the frequency distribution chart, that was not so obvious from your Data Collection Survey?

4. Sometimes data is spread over a large range of numbers, therefore we can group the data into intervals. Below are a list of 25 bowling scores:

Bowling Scores
Score	Tally	Frequency
111-120
121-130

4a. Can you tell what the individual data items are in a frequency table with intervals? without intervals? Explain.
4b. Why is the same number of units contained in each interval of a frequency table?

5. Information is lost in a frequency table with intervals. The stem-and-leaf plot is an alternative display  where each number is represented. In the bowling score 155, 15 is the stem and 5 is the leaf.  Complete the Stem-and-Leaf for the bowling stores in #4.

5a. Unfortunately, a 2 year old tried to bowl and only scored a 9. Name the stem.
5b. Can the leaves in a stem-and-leaf plot be two-digit numbers? Explain.

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