Probability and Statistics review

Probability Vocabulary

100

______ - The measure of chance 

Probability! 

200

_____ - an event will happen without a doubt. 

Certain 

300

_____ - When the probability of one event is higher than the probability of another event. 

Likely! 

400

_____ - There is no chance of an event happening. 

Impossible 

500

______ - There is less of a chance this event will happen, compared to another event. 

least Likely!

Practice Probability

100

What is the Probability of an event if it is impossible? 

Answer: 0

200

Out of the following possibilites, which answer is not possible? 

A. 2

B. 3/10  

C. 1/9

D. -1 

Answer: -1 

300

What is the probability of getting an even number, if a dice is thrown? 

Answer: 1/2

400

A number is chosen between 1- 10.  Find the probability of selecting the number 4 or smaller. 

Answer: 2/5

500

If you flip a quarter 150 times, approximately how many times would you expect it to land on tails? 

Answer: 75 times

Word Problems

100

If you do a lot of studying, it is ____ you will get a good grade! 

Likely! 

200

Mrs. Adams is having a Christmas part with her class tomorrow. she went to the store and got 8 chocolate cookies, 4 sugar cookies, 9 M and M cookies, and 3 raisin cookies. What is the probability of getting a sugar cookie?   

Answer: 1/6

300

The mini-Golf scores of you and 5 friends are 21, 16, 27, 30, 24, 32. What is the average score of the group? 

(Hint - are you finding the mean, or mode for this equation?) 

 

Answer: 25

400

In a bag, there are 6 orange, 7 white, and 8 blue marbles. If a marble is picked at random, what is the chance of not being orange or blue? 

Answer: 1/3

500

you are playing a game with a regular six-sided dice. You are 3 points away from winning the game. What is the probability of rolling a 3? 

1/6

Statistics Vocabulary

100

______ - Conducting studies to collect, organize, summarize, Analize and draw conclusions from data. 

Statistics!

200

_____ - An attribute that can assume different values. 

Variable! 

300

_____ - the information, or values the variables assume. 

Data! 

400

______ - Variables determined by chance. 

Random variables!

500

_____ - the average of the set data. 

Mean! 

Statistics Practice

100

Find the mean of the set of numbers. 

12,3,5,4,6

answer: 6

200

find the mode of the numbers in the data set. 

14, 32, 63, 14, 31, 9, 36 

Answer: 14

300

Find the median of the data set. 

10, 8, 18, 16, 14, 5, 

Answer: 12

400

Find the mean of the data set. 

15, 14, 2, 9, 13, 15, 9 

Answer: 11

500

Find the mode of the numbers in the data. 

14, 15, 22, 24, 14, 74, 23 , 15

Answer: 14, 15