statistic worksheet
Project 2: Probability and Diagrams Name: The diagrams below refer to the following events: M an individual is Male and B: and individual’s favorite color is blue. Fill in the missing information in the table and diagrams below.
Symbols 2‐way Table
Sample size = 200 P(B) = 84/200 P(M) = 64/200 P(M’|B) = 48/84 P(B|M’) =
P(MB) =
P(MB) =
Blue Not Blue Total
Male
Female
Total
Venn Diagram Tree Diagram
Consider the two‐way table 1. What information is easiest to see with the table? 2. What information is difficult to see with the table? 3. How would our probabilities be affected by interchanging the row and column variables? Explain.
Consider the Venn diagram 4. What information is easiest to see with the Venn diagram? 5. What information is difficult to see with the Venn diagram? 6. Why does it not work to have the two circles correspond to events M and M’? 7. What information did you put in the circles? Can use you count and probability information or only event
names? Explain. Consider the tree diagram 8. What information is easiest to see with the tree diagram? 9. What information is difficult to see with the tree diagram? 10. How are mutually exclusive events shown in the tree diagram? 11. How are conditional events displayed in the tree diagram? Can you see these in the Venn diagram?