SURVEY PROJECT INFORMATION

You are given 30 data points (individual numbers). Design a survey project that involves:

1.. Tabulating the data and representing the data in a bar graph (circle graph is extra credit)

2.. Finding the mean, median, and mode of your data (central tendency) .The mode, which isn’t discussed in your text, is the most frequently occurring number in your data (it is repeated the most times).

3. Finding the range of your data (spread or dispersion).The range, which isn’t discussed in your text, is the difference between the highest and lowest numbers (subtract the lowest number from the highest number in your data).

4.. Evaluating your methodology and results.

This can be either an individual project, or a two-student collaborative project. A written version of the project, covering steps 1-4 above must be submitted. Grades will be based on accuracy, originality, and the completeness with which the statistical topics are explored. If two students collaborate, define the contributions of each one to the project. Both members of the same group will receive the same grade, so both members are expected to participate equally. The report should not be more than 4-7 pages, including graphs and tables. In a two student project, each member will assist in the evaluation. .

FIRST STEP

1. Read the sample survey project (Radio) completely.

2. The first question in the sample survey was quantitative (numeric) and provided a range of numeric data. The first question could have begun in many ways, such as:

A. How long …?” (time)

B. How far …?” (distance)

This question provided a spread of numbers for central tendency calculations, a dispersion calculation (range), and the bar graph.

3. The second question provided qualitative (categorical) data. This data will be used for the pie chart or circle graph (extra credit).

SECOND STEP

1. There are several methods of sampling people to collect data, but they aren’t discussed in your text. .For purposes of this project, assume that simple random sampling (a method where each person in a group has an equal opportunity to be selected) was used to collect the data. An example of this method is placing all the names of attendees at a social function in a hat, and drawing one name out of it for a door prize .You are responsible for the definition and a basic understanding of this method in your project.

NEXT STEPS

After that, tasks should be decided for each group member, if two students are collaborating. A possible task breakdown is:

1. Introductory material (see sample).

2. Ranked data, frequency distribution, and bar graph (need different person to check)

3. Central tendency (mode, mean, median) and dispersion (range) calculations (need different person to check)

4. Circle graph and angle calculations (OPTIONAL – need different person to check).

5. Data analysis (written together if a two student project)

Bar Graph

The frequency groups or classes set up for the bar graph must be the same width, must not overlap, and the graph must have 5 to 12 bars. For example, if the first group is 1 – 4, the second group must be 5 – 8, the third group must be 9 –12, etc.; the width of each group is four in this case. Plan to group your data. Frequencies go on the vertical “y” axis and survey values (your data points) go on the horizontal “x” axis. You will have three titles: a graph title, and horizontal and vertical axis titles. A space the width of one bar needs to be left between the vertical axis and the first bar on this required graph.

If working as a group, send your assigned part of the project to your partner. When you both know all the calculated values and graph results for the group, the next step is to contribute to the data analysis or interpretation.

In the data analysis, describe ALL the results of the measures of central tendency, the measure of dispersion (range), and the graph (s). You can make other comments about the project, but don’t forget to discuss the data. The data analysis should be no more than one-half to one page.

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The questions below are the source of your data:

1. How many minutes do you spend commuting one-way on an average workday?

2. Which mode of transportation do you use most of the time for commuting?

a) private car b) train c) walk/bicycle d) bus e) carpool

Your data is as follows:

#1 #2

1. 30 car

2. 90 train

3. 15 car

4. 20 walk/bike

5. 10 car

6. 75 car

7. 20 walk/bike

8. 60 train

9. 45 car

10. 30 car

11. 15 walk/bike

12. 35 bus

13. 80 car

14. 40 car

15. 40 train

16. 25 car

17. 65 car

18. 50 carpool

19. 45 car

20. 30 car

21. 20 train

22. 10 car

23. 45 car

24. 20 car

25. 45 train

26. 12 car

27. 10 car

28. 30 carpool

29. 18 car

30. 35 car

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