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Statistics Review

Total questions: 50

Worksheet time: 3hrs 22mins

Name
Class
Date
1.
The entire group studied.
a)
sample
b)
population
2.
What would be the population in this example?
Surveyors in a mall choose shoppers to ask about products they prefer.
a)
the surveyors
b)
all shoppers in the mall
c)
the shoppers who were asked their preferences
3.
What would be the sample in this example?
Surveyors in a mall choose shoppers to ask about products they prefer.
a)
the surveyors
b)
all shoppers in the mall
c)
the shoppers who were asked their preferences
4.
A radio station in Raleigh, NC wants to know the most popular song of the week. The DJ surveys random listeners who call in throughout the week. What is the population of the DJ’s survey?
a)
all the people in Raleigh, NC
b)
listeners of this radio station
c)
the listeners who call the station
d)
the most popular song of the week
5.

Population or Sample?

A survey of 1353 Saudi households found that 18% of the households own a computer.

a)

Population

b)

Sample

6.
The part of the population being studied
a)
population
b)
sample
c)
random
7.

What is the sample and population?
Number of McDonald's in a 25 miles2 area of Taif

a)

Population:  Number of McDonald's
Sample:  25 miles2 of Taif

b)

Population: 25 miles2 of Taif
Sample:  Number of McDonald's

c)

Population:  25 miles2
Sample:  Taif

d)

Population:  Taif
Sample:  Number of McDonald's

8.

Zoie completes a report by asking 70 students across campus. She found that 48% of CIAA students do not wash their hands after using the bathroom. What is the population of her survey?

a)

the bathroom

b)

CIAA students

c)

48% of students

9.
The manager of a book store surveys people who buy mystery novels to see if the store should expand its hours.  What is the population?
a)
People who visit the bookstore.
b)
People who buy mystery novels.
c)
Residents of the town
d)
People who like to read.
10.
A student surveys mathematics teachers to get their opinion on teaching.  What is the sample?
a)
All teachers in the world.
b)
All teachers within the school.
c)
All mathematics  teachers in the school.
d)
All teachers except mathematics teachers.
11.

Susan polled 587 people throughout each city in her county.  Each city is the same size.  Is this sample of the residents of cities in the county likely to be random?

a)
yes
b)
no
12.
Leslie surveyed the 9 youngest students in the elementary school.  Is this sample of the students in the school likely to be representative?
a)
yes
b)
no
13.

To determine how often people eat out, every tenth person entering a fast food restaurant is surveyed.

a)

Random Sample

b)

Representative Sample

14.

Henry surveyed the first 7 celebrities to arrive at the movie premiere.  What is the sample type?

a)

Random

b)

Representative

15.

Eric surveyed 402 employees at the company who worked in Marketing.

What is the sample type?

a)

Random Sample

b)

Representative Sample

16.

The TV station wants to get the opinion of viewers on the look of a new game-show set.

The station's staff calls random people in the phone book.

What is the sample type?

a)

Random

b)

Representative

17.

To determine how often people eat out, every tenth person entering a fast food restaurant is surveyed.

a)

Random Sample

b)

Representative Sample

18.

The city council in Middlefield wants to know if residents are in favor of a traffic camera at the main intersection in town. Which example is likely to produce a representative sample?

a)

Drivers who reside in Middlefield

b)

Residents chosen from the town register

c)

All residents of Middlefield

d)

All people with a five-letter last name

19.

A movie theater considers upgrading to offer luxury seating. The manager randomly surveys​ 1,200 residents who live within 10 miles of the theater. What is the sample in this​ situation?

a)

The​ 1,200 residents surveyed

b)

​1,500 randomly surveyed customers of the movie theater

c)

All of the movie​ theater's customers

d)

All residents who live within 10 miles of the theater

20.

A student wants to know which type of pizza the students at her school prefer. Which option would give an unbiased, representative sample?

a)
Asking all the students in the hot lunch line.
b)

Asking 10 students from each homeroom.

c)
Asking every other student who gets off a school bus.
d)
Asking all the 10th graders.
21.
The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?
a)
5
b)
6
c)
9
d)
11
22.
What is the mode?
a)
The value that occurs the most often in a data set
b)
The middle number in an ordered set of data
c)
The sum of all the numbers in a data set divided by the size
d)
The sum of the between the greatest and the least elements, divided by two
23.
A data set can have more than one _______
a)
Median
b)
Mode
c)
Mean
d)
Midrange
24.

What is the mode?

4 , 8 , 5 , 17 , 5 , 4 , 9 , 5 , 6 , 82

a)

4

b)

9

c)

6

d)

5

25.

Which is the MIDDLE of an ordered set of data?

a)

Mean

b)

Median

c)

Mode

d)

Range

26.

Which is a synonym for "average?"

a)

mean

b)

median

c)

mode

d)

range

27.
Find the mean of these numbers:
5, 11, 2, 12, 4, 2
a)
4.1
b)
6
c)
4.5
d)
4
28.
What do you do if there are two numbers in "the middle" when you are finding the median?
a)
Pick your favorite number
b)
Add the two numbers in the middle & then divide by two.
c)
They are both the median
d)
None of the above
29.

What measure of central tendency (mean, median or mode) would be best for the following set of data?

0, 89, 92, 97, 99, 100

a)

Mode, because it is the one that shows up the most.

b)

Median, because there is an outlier. The outlier would influence the mean too much.

c)

Mean, because you should always use the mean.

d)

There is not a best measure of central tendency for this data.

30.

What is the mode in the following numbers? [3, 24, 3, 7, 30, 1, 3, 7, 3]

a)

3 and 7 both are modes

b)

1 and 7 both are modes

c)

3 only

d)

7 only

31.
In order to find the median, the data must be sorted from least to greatest first.
a)
True
b)
False
32.
What is the RANGE of this data
a)
40
b)
95
c)
90
d)
100
33.
What is the MODE of this data?
a)
100
b)
20
c)
80, 85, and 90
d)
none
34.
What is the RANGE of this data?
a)
20
b)
90
c)
70
d)
80
35.
What is the MODE of this data?
a)
90
b)
85, 90, and 95
c)
85 and 95
d)
None
36.
Each dot represents 1 day. How many days were recorded?
a)
9
b)
21
c)
20
d)
105
37.
What is the mode of the trout weight?
a)
450
b)
450.5
c)
452
d)
460
38.
What is the upper extreme?
a)
88%
b)
100%
c)
13
d)
98%
39.
What is the mode?
a)
88%
b)
89%
c)
97%
d)
91%
40.
What is the median of the data?
a)
200
b)
100
c)
90
d)
140
41.
What is the interquartile range?
a)
4
b)
6
c)
2
d)
8
42.

Karen constructed the box-and-whisker plot below to show information about her first semester scores.

What was Karen's median test score?

a)

70

b)

85

c)

90

d)

95

43.
What value is the lower quartile?
a)
66
b)
58
c)
60
d)
64
44.
Which box and whisker plot has the highest median?
a)
Top plot
b)
Bottom plot
45.
Which restaurant has a higher median wait time?
a)
Lucy's Steakhouse
b)
Gary's Grill
c)
They are the same
46.
What data value is the upper quartile (Q3)?
a)
64
b)
62
c)
66
d)
58
47.

If 60 values were used for the data, about how many data values are greater than the 1st quartile?

a)

15

b)

30

c)

45

d)

60

48.

Use the data in the graph to make an inference.


If Hector has to close his shop either Thursday, Friday, Saturday, or Sunday, what day should he close it?

a)

Friday

b)

Sunday

c)

Thursday

d)

Saturday

49.
What can you "infer" by reading the passage below?

"I hate the idea of having all those people out there watching me...I just don't like it when I'm around so many people. I wish I just could hide somewhere," whispered Violet.
a)
Violet can be a mean girl.
b)
Violet can be somewhat relaxed.
c)
Violet is probably somewhat shy.
d)
Violet is afraid of everything.
50.
The most accurate and complete inference based on the photo is:
a)
A. The children are participating in a race at school.
b)
B. The children are competing against one another.
c)
C. A boy tries to catch up to a girl as they race on the beach.
d)
D. A little girl expresses her joy as she wins a race against her peers.

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