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NCSD 8th Grade Data Analysis & Probability Test Bank
供稿人: McMullen

What is the probability of rolling an even number

on one die and an odd number on the other?

½

¾

 ¼
D.8.12

This  list represents Frank's cards.

If Frank randomly selects two cards,

an Ace of Spades and Two of clubs,

and does not replace them. What is

the probability the next card will

be a heart?

 33 1/3%

 30%

 6

3%
D.8.11

I have two different rings, four

hats, and three jackets. How

many ways can I select a ring,

hat, and jacket to wear?

9

 24

1/24

 

12

 

D.8.10&12

Each spinner is spun one time. What

is the probability neither spinner will

land on blue?

1/12

3/10

 ½

11/12

D.8.12

If I spin each spinner one time, how many possible

outcomes are there?

 12

8

1/8

1/12

D.8.10

The table shows the results of spinning a spinner

with five equal sections fifty times. Based on these

results, what is the probability of spinning an

odd number?

 

 

 25%

 50%

 25

36%

 
D.8.7

This spinner has equal sections, labeled A, B, C, D,

and E.   If I spin the spinner two times, what is the

probability it will land on A each time?

1/10
1/25
1/5
2/25
D.8.10
What is the probability
of picking a yellow
or a blue disc?
D.8.11

Susan has 4 colors of wrapping paper,

3 colors of ribbon, and 2 types of tape.

How many different ways does she have

to wrap a package with one color of

wrapping paper, one color of ribbon,

and one type of tape?

1
4
12
24
D.8.9

What is the mean?

 

the number(s) that occur the most frequently

 "arithmetic average"

greatest number - smallest number

the middle # in an ordered set of data
D.8.1

the middle # in an ordered set of data

 the difference between the greatest & lowest  #s

"arithmetic average"

the number(s) that occurs the most frequently

What is the best definition  for "range"?
D.8.1

What is the mode?

 

the number(s) that occur the most frequently

 "arithmetic average"

greatest number - smallest number

the middle # in an ordered set of data
D.8.1

the middle # in an ordered set of data

 the difference between the greatest & lowest  #s

"arithmetic average"

the number(s) that occurs the most frequently

What is the best definition  for "median"?
D.8.1
Match the terms with the definitions.
Use capital letters.


A. Mode

B. Median

C. Range

D. Mean
"arithmetic average"
and lowest values
difference between highest
of data items
exact middle value in a set
data value occurring most often
D.8.1

Tanya's has the following scores in Social Studies

95, 85, 65 and 77.  With these scores she currently

has an average grade of 80.  What is the lowest

score she can get on the next exam and still

be able to maintain her 80 average?

74

 77

73

75

D.8.4
What is the median age of a player?
What is the range of ages?
Age Ranges of Football Team
  3
 2
1
          key   1
3, 3, 4, 4, 5, 6

4,5, 6, 7, 7, 8,8,9

1, 3, 3, 5, 9
3
= 13
D.8.4
What is the mode of the data?
33, 23, 55, 66, 13, 35, 27, 28, 59,59, 55,55, 15, 16
Given the following data create a stem and leaf plot.
Stem        Leaf
2

5

3, 

3, 5

,
,9,9
D.8.4&6
If the outcome of an event does not effect the outcome
of another event, the two events are---------
Dependent
Compound
Independent
Simple
D.8.2


What is the probability of

selecting a blue marble from

the bag?

2/7

5/7

 10/49

7/7

D.8.11
If the outcome of an event does effect the outcome
of another event, the two events are-------
Dependent
Independent
Compound
Simple
D.8.2
If I flip a coin and then roll a die the outcomes are:
Unknown
Independent
Dependent
D.8.2
I draw an Ace of Spades from a deck of cards
and do not replace it.  Then I draw another card
from the deck of cards. This is an example of:
Independent Events
Dependent Events
D.8.2
A bag contains 4 red marbles, 5 blue marbles, and
3 green marbles. Two marbles are picked at random.
On the first pick a red marble is drawn out and then
replaced.  This is an example of:
An Independent Event
A Dependent Event
D.8.2
A bag contains 4 red marbles, 5 blue marbles, and
3 green marbles. Two marbles are picked at random.
On the first pick a blue marble is drawn out and not
replaced.  This is an example of:
An Independent Event
A Dependent Event
D.8.2
Kaitlyn surveyed all the members of the middle school band about their
favorite class this semester.  The results are shown in the table below.
From these results, Kaitlyn concluded that band was the favorite class among
all the students in her school.  Which is the best explanation about why her
conclusion may not be valid?
The survey should have been done each day for a week.
The sample was not representative of all the students at the school.
The survey should have been done with eighth grade students only.
The band meets only three days a week.
D.8.13
Which circle graph best represents the type and number of pets reported by
students in the survey?
Mrs. Plachy surveyed the students in her science class about the type and number
of pets they owned.  The table shows the results of the survey.
A
B
C
D
D.8.6
The number of games won over four years for
three teams is shown on the graph below.
Team 2 won more games each year
       than in the previous year.
Team 1 always won more games
       than Team 3.
Team 3 always came in second.
Team 1 had the best average overall.
Which statement is true
based on this information?
Complete the stem and leaf diagram
38
5
3
4
2
Here is a  list of  test scores
37
3
4
34
Key 3
1
41
29
7
4   means 4
8
54
33
40
38
56
D.8.8
Here is a stem and leaf diagram showing
the ages of 9 people
b. What is the range of ages?
a.  What is the mean of the data?
c. What is the median age?
3
2
0
1
0
5
3
5
1
4
4
7
8
Key 3
4   means 4
D.8.4
a. what is the modal test score?
b. what is the range of scores?
c. what is the mean score?
(Round to the nearest hundredth.)
d. what is the median score?
Here is a stem and leaf diagram showing the
test scores of 11 pupils
7
4
5
6
2  3  4
1  1  8
6  7  9
2  5
Key 5
  3   means 53
D.8.4
Match the terms with the definitions.
Use capital letters.


A. Unlikely

B. Equally Likely

C. Impossible

D. Certain
two outcomes that have the
same chance of happening
an event that may not happen
an event that can not occur
an event that is sure to happen
D.8.3
Unlikely
Equally Likely
More Likely
Certain
The sun will come up tomorrow is an example of
which type of event?
D.8.3
A person living to be 200 years old is and example
of which event?
Impossible
More Likely
Certain
Unlikely
D.8.3
Getting heads or tails when flipping a coin is an example
of which type of event?
Unlikely
Equally Likely
More likely
Impossible
D.8.3
A high school football player growing up to be in the
NFL is an example of which type of event?
More Likely
Unlikely
Impossible
Certain
D.8.3
Centennial JHS
8th grade girls
8th graders
8th grade boys
A survey is given to students in the 8th grade at
Centennial JHS.  What is the sample space?
D.8.13
Which sample space would be the best choice to
answer the question "Which actor is the favorite among
7th grade girls?"
Students in Spanish classes
Girls during 7th grade lunch
Students in 7th period choir
Students at the local middle school
D.8.13
Create a tree diagram for the following problem. An ice cream shop has vanilla and
chocolate ice cream, and chocolate and strawberry syrup.  You can also choose
between sprinkles or nuts. Make a tree diagram showing the outcomes.
Ice Cream Flavor     Syrup Flavor                Topping
vanilla











chocolate





chocolate





strawberry
nuts


sprinkles


sprinkles

nuts
D.8.8
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