Units 10 & 11 Study Guide
Probability and Data Analysis
12-7, 12-8, and 12-10: Probability
For the following questions, imagine that you are flipping 3 coins.
1. Create a tree diagram of all of the possible outcomes.
2. What is the size of the sample space?
3. P(3 tails)
4.
5.
6.
7.
8.
A boy spins a spinner that has 4 sections: blue, yellow, red and green. The spinner
is spun 24 times with the following results: 4 red, 11 blue, 6 yellow and 3 green.
What is the theoretical probability that he will spin green next?
What is the theoretical probability that on the next two spins he will spin red then blue?
What is the theoretical probability that on the next spin he will spin red or blue?
What is the experimental probability that he will spin green?
Which color has the same experimental and theoretical probability?
Imagine there are 2 bags filled with tiles. In the first bag, there is a tile for each
letter of the alphabet. In the 2nd bag, there is a tile for each of the 10 single digits.
9. If you reach into both bags, how many possible outcomes are there?
10. If you pull a tile from each bag, what is the probability of pulling out a vowel and an even
number?
5-9: Measures of Central Tendency
Data Values:
41, 12, 8, 9, 11, 7, 16, 16, 12, 11
Round to the nearest tenth if necessary.
1. Mean =
2. Median=
3. Mode=
4. Outlier=
5. Range=
6. Which measure of central tendency best represents the given data values? Why?
12-1: Stem and Leaf Plots
7. How many data values are displayed in the graph?
8. What is the median value?
9. Name 3 missing parts of the graph.
12-4 Histograms
10. What is the size of the intervals?
11. How many countries are represented in the graph?
12. How many countries have at least 15 threatened species?
13. How many threatened species do most countries have?
*You will also have to be able to read bar graphs, line graphs, and circle graphs*
Please refer to your Make Up Monday packet for examples of this.
Answer Key
1.
2. 8 outcomes
8. yellow
3. 1/8
9. 260
4. ¼
10. 5/260
5. 1/16
6. 1/2
7. 1/8
5-9: Measures of Central Tendency
1. 14.3
2. 11
3. 16
4. 41
5. 34
6. Median, half of the data values are greater than the median while the other half is less than the
median
12-1: Stem and Leaf Plots
7. 13
8. 35
9. Title, labels, key
12-4 Histograms
10. 5
11. 42
12. 6
13. 5-9