6th Grade Math Textbook, Progress

15

Probability I

Equally/Not Equally Likely Outcomes

For each experiment, list the possible outcomes. Then write

whether the outcomes are equally likely or not equally likely.

1. Toss a marker 2. Spin the spinner.
   on the board.


2. Roll the number cube. 4. A jar contains 4 balls: 1 red,
   1 white, 1 yellow, and 1 blue.
   Choose a ball without looking.

Use the spinner on the right to find

the probability of landing on:

5. red 6. blue 7. green 8. yellow

4

1

6

241

6

5

3

B

1

9

(^53)
7
A B
C
12
34
For each of the spinners, there are 5 possible results,
or outcomes: 1, 3, 5, 7, 9.
With Spinner A,each number has the same
chance of occurring. The outcomes are
equally likely.
With Spinner B,the outcomes are not equally likely.
The spinner is more likely to land on 1 than on 9.
The spinner has 8 equalsections. Of the equal
sections, 3 are red, 3 are green, and 2 are blue.
The probability of the spinner landing on

red is 3 out of 8.

green is 3 out of 8.

blue is 2 out of 8.
19
3
5
7
A
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