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Probability & Stats Review

Total questions: 39

Worksheet time: 1hrs 22mins

Name
Class
Date
1.
Experimental Probability is:
a)
What Will happen 
b)
What actually happens
c)
What should happen
d)
What I think Happens
2.
Theoretical Probability is?
a)
What Should happen
b)
What does happen
c)
What Will Happen
d)
What I want to Happen
3.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
4.
The chart below represents the number of marbles in a jar.
P(green) = 
a)
5/19
b)
10/28
c)
5/14
5.
What is the probability of selecting an orange candy?
a)
0%
b)
25%
c)
50%
d)
100%
6.
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?
a)
3
b)
1/10
c)
3/10
d)
30%
7.
P(not A) = 
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4
8.
Rolling a 15 on a number cube is 
a)
Impossible
b)
Certain
c)
Unlikely
d)
Equally Likely
9.

How many outfits are possible with 2 pairs of jeans, 5 t-shirts, and 2 pairs of shoes? (Hint: Use a list, tree diagram or the Fundamental Counting Principle.)

a)

9

b)

40

c)

20

d)

10

10.

At Domino's you are deciding on what you want for dinner. The pizza offers 8 different meats, 4 different cheeses, 3 different crust types and 2 different sauces. How many different pizzas do you have to choose from? (Hint: Use a list or tree diagram)

a)

32

b)

192

c)

40,320

d)

51,200

11.
What is the probability of spinning green?
a)
0
b)
1/4
c)
1/2
d)
3/4
12.
What is the probability of spinning red?
a)
0
b)
5/12
c)
1/2
d)
3/4
13.
The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”? 
a)
2/7
b)
5/49
c)
5/7
d)
10/49
14.
How do you write 0.02 as a percent?
a)
20%
b)
200%
c)
2%
d)
.02%
15.
You flip a nickel three times.
Find the probability that all flips will land on tails.
a)
1/2
b)
1/4
c)
1/6
d)
1/8
16.
The theoretical probability of rolling an even number on a dice.
a)
3/6
b)
1/2
c)
1/6
d)
5/6
17.
A set of all possible outcomes is known as - 
a)
a list
b)
a complement
c)
a sample space
d)
an event
18.
The probability of an event occurring, P(A), can be expressed as a fraction, decimal, or percent.
a)
True
b)
False
19.
Probability is ...
a)
the chance that some event will occur.
b)
a game that involves coins.
c)
a guarantee.
20.
The probability of it raining today is 30%.  What is the probability that it will NOT rain?
a)
30%
b)
70%
c)
100%
d)
0%
21.
A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number 3? 
a)
1/12
b)
1/4
c)
1/8
d)
1/2
22.
A bag contains 5 yellow, 4 green, and 2 blue marbles. One marble is drawn and immediately put back in the bag. Then a second marble is drawn. Identify whether the events are independent or dependent. 
a)
Independent
b)
Dependent
23.
Two marbles are randomly drawn from a bag containing 3 purple, 1 blue, and 1 yellow marble. The first marble is blue and is not replaced. Find the probability of drawing a second marble that is purple. 
a)
3/5
b)
3/4
c)
3/20
d)
2/5
24.
Two cards are drawn from a standard deck of cards and no cards are returned to the deck. Identify whether the events are independent or dependent. 
a)
Independent
b)
Dependent
25.
Johnny did a survey and discovered that 5 out of 32 students walk to school. If 3 students are randomly selected from Johnny's school, without replacement, what is the probability that all 3 students walk to school? 
a)
3/7,440 = 0.04%
b)
1/4,960 = 0.06%
c)
15/8,192 = 0.18%
d)
1/496 = 0.2%
26.
An ice cream parlor has 6 different flavors. They have 4 toppings and 2 types of cones. How many possible ice cream combinations are there?
a)
6
b)
48
c)
12
d)
24
27.
There are 2 violet balls and 4 pink balls in a bag. If two balls are drawn one after the other, then what is the probability of getting violet first and pink next, if the first ball drawn is replaced?
a)
1/3
b)
2/9
c)
1/6
d)
1/4
28.

What is the mean of this set of data?

2, 15, 7

a)

24

b)

3

c)

6

d)

8

29.
What is the range in gas mileage for cars?
a)
2
b)
3
c)
4
d)
6
30.

At an assembly 7 out of 10 students who entered the gym were carrying a backpack. Based on this information, if 700 students were at the assembly, how many students could be expected to be carrying a backpack?

a)

49

b)

490

c)

210

d)

421

31.
Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?
a)
thirty students who are often tardy
b)
thirty students who are rarely tardy
c)
thirty of her friends
d)
thirty randomly selected students from her school
32.

A public library asked every 10th person who entered to name the type of book they were getting

a)

Biased

b)

Unbiased

33.
A sample should be
a)
representative of  only middle school students only
b)
a very large group
c)
representative of the population
d)
representative of people who volunteer
34.

A radio station asks its listeners to dial one of two numbers to indicate their preference for one of two candidates in an upcoming election. Of the responses received, 76% favored candidate A. If there are 1,500 registered voters, how many will vote for candidate A?

a)

1,140

b)

6

c)

1,974

d)

100

35.
Find the Mean Absolute Deviation:  10, 9, 3, 8, 10.  The Mean is 8
a)
3
b)
5
c)
1
d)
2
36.
Find the Mean Absolute Deviation:  5, 11, 2, 7, 16.  The Mean is 8.2 
a)
3.2
b)
2.8
c)
1.2
d)
4.2
37.
True or false? :The larger the Mean Absolute Deviation the more consistent the data is.
a)
True
b)
False
38.
Which dot plot shows more consistency? a or b?
a)
a
b)
b
39.
Which dot plot shows more variability? a or b?
a)
a
b)
b

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