Data Distribution Builder — Worksheet

Data Distribution Builder

Worksheet

Open the Data Distribution Builder. The class answered the question “How many books did each student in your class read this year?” Use the sample buttons to load each data set, then read the measures off the panel.

Name: Date:

Part A: The symmetric sample

1. Load the Symmetric sample. How many observations are there? 1 pt
Answer:
2. What is the mean? 1 pt
Answer:
3. What is the median? 1 pt
Answer:
4. What is the range? 1 pt
Answer:
5. What is the interquartile range (IQR)? 1 pt
Answer:
6. What is the first quartile, Q1? 1 pt
Answer:

Part B: The outlier sample

7. Load the Outlier sample. What is the mean? 1 pt
Answer:
8. What is the median? 1 pt
Answer:
9. One value (20) sits far above the others. Which measure better describes a typical student in this sample? 1 pt
  • The mean
  • The median
  • Neither; they are the same here
  • The maximum
10. What is the maximum value? 1 pt
Answer:
11. Explain why the mean moved a lot when the value 20 was included but the median barely moved. 2 pts

Part C: Statistical questions

12. The values in this data set are counts. What unit are they measured in? 1 pt
13. Why is “How many books did each student in your class read this year?” a statistical question, but “How many books did I read this year?” is not? 2 pts