Battaglia/Baldino

Name ______

Algebra 1 CP Project

Scatter Plots and Lines of Best Fit

You may work with one partner or by yourself.

Due:Wednesday, 11/7/09

Format:Poster

What to do:

  1. Invent a question that requires two numerical answers.
  2. Collect data from at least 30 people.
  3. Draw a scatter plot of your data (you may use Excel if you know how).
  4. Graph the line of best fit on your scatter plot.
  5. Describe the correlation if there is one (negative, positive, none) and explain why the correlation makes sense or doesn’t. If there isn’t a clear correlation, explain why that could be true.

What should be on the poster:

  1. The question(s) you asked
  2. The data you collectedin a table (i.e. people’s answers to your questions…should be anonymous)
  3. The graph of the scatter plot with the line of best fit
  4. A description of the correlation in paragraph form
  5. Neatness counts! Make sure your project is neat, legible, creative, colorful, etc.

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EXAMPLE

Question:How many hours of sleep did you get the night before your history test, and what was your history test score?

Data(you should have 30 or Scatter Plot(done with Excel):

more points of data):

Hours of Sleep / Test Scores
6 / 69
8 / 91
7 / 80
6.5 / 71
4.5 / 52
7 / 69
8 / 86
9 / 99
8.5 / 97
6 / 78
7.5 / 66
6.75 / 80
7.25 / 89
6 / 55
9 / 77

RUBRIC

3 / 2 / 1 / 0
Question(s) / The question(s) asked make sense for this project and require numerical answers. / One question makes sense for this project and requires a numerical answer. / Two questions were asked, but they do not make sense or do not have numerical answers. / No questions were asked.
Table / The table contains 30 or more sets of data. / The table contains between 25-29 sets of data. / The table contains 15-24 sets of data. / There is no table or the table contains less than 15 sets of data.
Scatterplot / The scatterplot contains a title, labeled axis, 30 or more points that are plotted correctly, and a line of best fit. / The scatterplot is missing 1 or 2 of the following: title, labeled axis, points plotted correctly, line of best fit. / The scatterplot is missing 3 or 4 of the following: title, labeled axis, points plotted correctly, line of best fit. / The scatterplot is missing 5 or more of the following: title, labeled axis, points plotted correctly, line of best fit.
Description / The description correctly determines a correlation and clearly explains why or why not the correlation makes sense in at least 5 sentences. / The description correctly determines a correlation but does not clearly explain why or why not it makes sense OR there are only 3 or 4 sentences written. / The description does not determine a correlation OR the correlation is incorrect OR does not explain why or why not it makes sense OR there are less than 3 sentences written. / There is no description or what is written does not make sense.
Overall Project / The project is neat, legible, creative, and colorful. The table and scatterplot were created on the computer or with a ruler. / The project is legible, but not very neat, creative, or colorful. / It appears a lot of time was not spent on the project. It is not neat, the computer or ruler was not used. / Project is very sloppy and it appears no time was spent working on it.
Self Assessment / Self assessment is completed. / Self assessment is not completed.

Circle a score for each category.Final Self-Assessment score /16