scatter plot project
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- Damian Webster
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1 scatter plot project For this assignment, you will gather data from your classmates to create three different scatter plots. You should pick variables for each graph that will likely result in one scatter plot with a positive correlation, one with a negative correlation, and one with no correlation. step 1: pick your variables. Each of your three scatter plots should have different variables. Make sure that you are picking something that can be measured with numbers (age in months, height in inches, number of siblings, number of letters in a name, etc). step 2: answer questions. Answer the questions on the front of the question sheet explain why you expect each scatter plot to have the kind of correlation you selected. step 3: gather your data. Ask your classmates to provide data for your three scatter plots, and record their names and responses on the provided data sheet. step 4: plot your data points. Label your x and y axes, and decide on an appropriate scale for your axes. Plot all of your data points for each of your three scatter plots. step 5: answer questions. Answer the questions on the back of the question sheet did your scatter plots look the way you expected them to? step 6: line of best fit. Draw a line of best fit on the scatter plot that has a positive correlation and the scatter plot that has a negative correlation. Determine the equation for each line of best fit, and record it on your question page.
2 scatter plot 1 positive correlation data Name Variable 1: Variable 2:
3 scatter plot 2 negative correlation data Name Variable 1: Variable 2:
4 scatter plot 3 no correlation data Name Variable 1: Variable 2:
5 scatter plot questions 1) What variables did you choose for your positive correlation scatter plot? Why do you think these variables will have a positive correlation? 2) What variables did you choose for your negative correlation scatter plot? Why do you think these variables will have a negative correlation? 3) What variables did you choose for your no correlation scatter plot? Why do you think these variables will have no correlation?
6 scatter plot questions 4) Did any of the results of your questions surprise you? If so, which ones? Did the correlations turn out as you expected? Were any variables more or less correlated than you expected? 5) Write the equation for the line of best fit for your first scatter plot (positive correlation). 6) Write the equation for the line of best fit for your second scatter plot (negative correlation).
7 scatter plot 1 positive correlation
8 scatter plot 2 negative correlation
9 scatter plot 3 no correlation
10 scatter plot project grading rubric Variable Selection Reasonable variables are chosen for all three scatter plots Reasonable variables are chosen for two scatter plots Reasonable variables are chosen for one scatter plot None of the scatter plots have reasonable variables Questions #1-4 All questions are answered in complete sentences All questions are answered Some questions are answered No questions are answered Data Collection All three scatter plots have 20+ data points Two scatter plots have 20+ data points One scatter plot has 20+ data points None of the scatter plots have 20+ data points Scatter Plots All data points are plotted correctly for all three scatter plots All data points are plotted correctly for two scatter plots All data points are plotted correctly for one scatter plot None of the scatter plots have correctly plotted data points Line of Best Fit The line of best fit is drawn correctly for each graph, and the equations are correct The line of best fit is drawn correctly for each graph, and one equation is correct The line of best fit is drawn correctly for each graph, but the equations are not correct The line of best fit is not drawn correctly for either graph Total points (out of 15):
11 If students are having trouble coming up with ideas for their variables, here are some that students have had success with in the past: Positive Association Negative Association No Association Height in inches & shoe size Number of siblings & number of bedrooms in house Number of library visits & number of books read Number of hours spent watching tv & time spent asleep Number of pages read in [book assigned in ELA] & number of pages left to read Number of sports played & time spent playing video games Number of Instagram followers & height Number of pets & favorite number Last digit of phone number & length of hair Height in inches & wingspan in inches School absences & test average Locker number & house number Distance from school & time to get to school Number of states visited & number of states left to visit Forearm length & number of close friends Number of sports played & time spent exercising Number of male teachers & number of female teachers Number of sisters & number of times traveling to Canada MiddleMath 2016
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