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Probability and Statistics
Lesson 18
Prediction and Inference
  Objectives/Vocab/Tips > Examples 1 | 2 > Practice: 1 | 2 | 3 > Reflection

Example 2:

Cameron gathered data from his 8th grade class asking them what their favorite sport was. He took the data and placed it into a bar graph below.

Cameron realized that he missed 10 students who were absent that day.

  • Using the data and graph above, what can Cameron infer or predict the missing 10 students might say is their favorite sport?
  • Explain your answer is detail using words, numbers, and/or pictures.

When answering a problem like this one, you need to be sure you understand the problem and what you are being asked to answer. You know that Cameron gathered data about his fellow classmates and their favorite sports. Making sure that you know how to read the bar graph that Cameron used to show his data, you will need to make some predictions and support your predictions. You know that Cameron needs to predict what the other 10 students may say to be their favorite sport.

As you look over the graph, you notice that the two sports that are the favorites of more students is basketball and soccer. Knowing this, you would predict that out of the 10 students, 3 or 4 may choose soccer and 2 or 3 may choose basketball. With the remaining 3 or 5 students you would most likely predict that they would choose baseball, football, and then most likely an "other" sport.

Be sure with a problem like this that you state your answer clearly, for example, 4 students would choose soccer, 3 students would choose basketball, 2 students would choose baseball, and 1 student would choose football. This would be for the first point of your answer.

For the second point you would need to be sure to support your predictions with a clear explanation using the data in the graph as your guide.

Practice 1 >>

 

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