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7.3 - Representing Data and Probability Review

Total questions: 25

Worksheet time: 1hrs 18mins

Name
Class
Date
1.

Describe the shape of the histogram

a)

Bimodal

b)

Symmetric

c)

Skewed right

d)

Skewed left

2.
How do you find the mean?
a)
order least to greatest, then slash from each side until you reach the middle
b)
add the numbers in your data set, then divide by the amount you added
c)
look for the number that repeats the most
d)
highest number minus the lowest number
3.
How do you find the median?
a)
order least to greatest, then slash from each side until you reach the middle
b)
add the numbers in your data set, then divide by the amount you added
c)
look for the number that repeats the most
d)
highest number minus the lowest number
4.

The type of summary graph displayed is

a)

column graph

b)

bar graph

c)

dot plot

d)

scatter graph

5.

This data is

a)

symmetrical

b)

skewed right

c)

skewed left

6.

The box plots show the heights of people (in inches) in each city that were spotted in a supermarket.

Which statement is best supported by the information in the box plots?

a)

The interquartile range for Nashville is slightly greater than the interquartile range for Dallas.

b)

There was at least one person in both stores who was 75 inches tall.

c)

The spreads (ranges) for both cities is the same.

d)

Nashville has a smaller center (median) than Dallas.

7.

The graph below shows the number of sunny days and rainy days in a city during four months.


Based on the information in the graph, which inference about the general weather days is valid?

a)

There are more rainy days in April than sunny days in March.

b)

There are more sunny days in May than any other month.

c)

There are more rainy days in March than any other month.

d)

There are more sunny days in June than all the other months combined.

8.
Use the table to find the mean
a)
105
b)
111
c)
118
d)
130
9.
Find the Median of the data set
a)
77
b)
99
c)
80
d)
78.5
10.
Find the Missing Value that would make the mean of the data set 25
a)
22
b)
23
c)
24
d)
26
11.
In the last 5 games, Kevin Durant scored 22, 22, 18, 12, and 21 points. What is Durant's Mean (Average) score per game?
a)
 19 points per game
b)
95 points per game
c)
18.6 points per game
d)
22 points per game
12.
The salary of the employees in the office were $15,000; $18,000; $16,000; $14,000; $90,000; and $17,000.  What is the best measure of the central tendency of the salaries?
a)
Mean
b)
Median
c)
Mode
d)
Range
13.
CHALLENGE:
If the mean of a data set is 10, what is the missing piece of data? 
5, 4, 7, 15, 12, ___
a)
7
b)
17
c)
20
d)
16
14.
What color car is the least popular at this car dealership?
a)
Red
b)
White
c)
Blue
d)
Green
15.
How many sophomores like burritos and pizza?
a)
6
b)
5
c)
11
d)
50
16.
What percentage of males drive sports cars?
a)
35%
b)
16.25%
c)
65%
d)
25%
17.
What is the probability of rolling a dice and landing on a 4, and then rolling the dice again and landing on any even number?
a)
1 ⁄ 6
b)
1 ⁄ 8
c)
1 ⁄ 2
d)
1 ⁄ 12
18.
The outcome of one event does not influence the outcome of the other event
a)
independent event
b)
tree diagram
c)
simple event
d)
odds
19.
The weather forecaster predicted it will be 4/5 chance of rain for Monday and 2/3 chance of rain for Tuesday. What is the probability it will rain both days?
a)
1/2
b)
20/15
c)
8/15
d)
6/8
20.
Your drawer contains 6 red socks and 10 blue socks. It's too dark to see which are which, but you grab two anyway. What is the probability that both socks are red?
a)
5/15
b)
36/256
c)
1/3
d)
1/8
21.
A box contains 7 yellow pencils and 3 black pencils. Michael randomly chooses a pencil and does not replace it. Then he chooses a second pencil. What is the probability both pencils are yellow?
a)
54.4%
b)
46.7%
c)
49.0%
d)
23.3%
22.
A box contains 7 yellow pencils and 3 black pencils. Michael randomly chooses a pencil and does not replace it. Then he chooses a second pencil. What is the probability the first pencil is yellow and the second pencil is black?
a)
54.4%
b)
46.7%
c)
49.0%
d)
23.3%
23.

On the lake, one can spot many sailboats. The boats are a variety of colors: white, blue, and red. The sails on the boats are many colors also: green, pink, and purple. If 50% of the boats are white and 10% of the boats have pink sails and if these items are mutually exclusive, what is the probability that a boat is white with pink sails?

a)

0%

b)

10%

c)

50%

d)

60%

24.
If you flip 4 coins, what is the probability of getting all heads?
a)
1/2
b)
1/4
c)
1/8
d)
1/16
25.
A group of 125 pick up truck owners were asked what brand truck they owned and whether it had four-wheel drive. The results are given in the two-way table.
If you randomly selected one truck owner. What is the probability that he owns a Dodge or has a four wheel drive?
a)
20/80
b)
20/125
c)
80/125
d)
90/125

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