Probability

Permutations & Combinations

100

There are 12 students in class.  How many ways can a group of 4 be formed?

Is this a permutation or combination?

Combination

200

Mrs. Wilson is giving out 3 prizes for 1st, 2nd, and 3rd place.  If there are 22 students in the class, how many different ways could the prizes be awarded?

Is this a permutation or combination?

Permutation

300

There are 12 students in class.  How many ways can a group of 4 be formed?

495

400

Mrs. Wilson is giving out 3 prizes for 1st, 2nd, and 3rd place.  If there are 22 students in the class, how many different ways could the prizes be awarded?

9,240

500

There are 5 people in a race.  How many ways can they finish?

120

Venn Diagrams

100

P(Women)

11/28= 39%

200

P(Woman U Married)

20/28 = 71%

300

P(Not a woman)

17/28 = 61%

400

P(Woman who is married)

6/28 = 21%

500

What does the 8 represent?

Unmarried men

Conditional Tables

100

P(Woman)

14/31 = 45%

200

P(Men who likes skittles)

12/31 = 39%

300

P(Man | Skittles)

12/18 = 67%

400

P(Skittles | Woman)

6/14 = 43%

500

P(Man U Woman)

31/31 = 100%

Tree Diagrams

100

P(Blue)

1/14=7%

200

P(Blue and Brown)

1/14=7%

300

P(Brown and Brown)

156/182 = 85%

400

P(One of each)

26/186 = 14%

500

P(Blue and Blue)

0