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Data and surveys

Total questions: 36

Worksheet time: 3hrs 57mins

Name
Class
Date
1.

Example 1:

Find the median of 12, 34, 8, 16, 25, 3 and 10

Arrange the data in an increasing order.

3, 8, 10, 12, 16, 25, 34

The middle number is 12

What is the median?

(a)  

2.

Example 2:
Find the median of 5, 14, 22, 35, 20, 15, 6 and 28
Arrange the data in an increasing order
5, 6, 14, 15, 20, 22, 28, 35
The middle numbers are 15 and 20
 (15+20) 2=17.5\frac{\left(15+20\right)}{\ 2}=17.5  
What is the median? 

(a)  

3.

Find the median for the set of numbers:

23, 37, 11, 58, 13, 45

a)

30

b)

23

c)

37

d)

28

4.

The mode is the number ________________________.

a)

you see most

b)

you see least

c)

you don't see

d)

you see first

5.

What is the mode of the following data set?

5, 7, 7, 8, 12 , 12, 5, 6, 13, 12

a)

5

b)

7

c)

12

d)

no mode

6.
What is the first thing you should do before finding the median or the mode?
a)
Start crossing numbers off
b)
Put numbers in order from least to greatest
c)
List the numbers how they are
d)
Look for repeats
7.

Allen the Astronaut has to carefully measure his weight before going into space. Over the last week, here are his measurements in kilograms: 87.1, 87.6, 86.9, 87.0, 87.5, 87.2. Find his mode weight.

a)

87.2 kilograms

b)

There isn't one.

c)

87.15 kilograms

d)

0.7 kilograms

8.

What is the median of the data?

a)

10

b)

12

c)

13

d)

14

e)

18

9.

What is the range of the data?

a)

80

b)

10

c)

70

d)

40

e)

30

10.
What is the interquartile range?
a)
4
b)
6
c)
2
d)
8
11.
Which restaurant has a higher median wait time?
a)
Lucy's Steakhouse
b)
Gary's Grill
c)
They are the same
12.
What is the minimum value?
a)
64
b)
58
c)
66
d)
60
13.
What data value is the upper quartile (Q3)?
a)
64
b)
62
c)
66
d)
58
14.
What value is the lower quartile?
a)
66
b)
58
c)
60
d)
64
15.
What is the interquartile range (IQR) of the data set?
a)
20
b)
25
c)
5
d)
10
16.
Which of the following best describes the process of finding the interquartile range for a set of data?
a)
Add the biggest and smallest numbers.
b)
Place the numbers in order from least to greatest and find the middle.
c)
Find the difference between the maximum and the minimum.
d)
Subtract Q1 from Q3.
17.
Find the Maximum
a)
14
b)
20
c)
5
d)
12
18.
How many total people took the survey?
a)
50
b)
150
c)
100
d)
200
19.
What is the range of the data?
a)
4
b)
8
c)
6
d)
2
20.
What is the term for the median of the lower half of the data?
a)
Lower Quartile
b)
Upper Quartile
c)
Median
d)
Maximum
21.
What is the term for the median of the upper half of the data?
a)
Upper Quartile
b)
Lower Quartile
c)
Median
d)
Minimum
22.
What is the MEDIAN of this data
a)
95
b)
90
c)
100
d)
40
23.
What is the RANGE of this data
a)
40
b)
95
c)
90
d)
100
24.
What is the MODE of this data?
a)
100
b)
20
c)
80, 85, and 90
d)
none
25.
How many people have two or less books in their desk?
a)
4
b)
5
c)
6
d)
7
26.
1.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team.
a)
Biased
b)
Unbiased
27.
4. A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.
a)
Biased
b)
Unbiased
28.
6. To see who has a computer at home the front office chooses 10 students randomly per grade to ask
a)
Biased
b)
Unbiased
29.
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
30.
How many MEDIANS do you show in a box and whisker plot?
a)
one
b)
two
c)
three-- the median, lower quartile and upper quartile
31.
Which data set shows a greater spread?
a)
Chess Club
b)
Checkers Club
c)
They have the same spread.
d)
You cannot tell from the box plots. 
32.
Compare the centers and spreads. 
a)
 Math has a higher median (center) and a wider spread.
b)
 Math has a higher median (center) and a smaller spread.
c)
Math has a lower median (center) and a smaller spread.
d)
Math has a lower median (center) and a wider spread.
33.
7. What is Millersburg's Q3 value?
a)
200
b)
260
c)
220
d)
140
34.
_______ is a part of a group being surveyed.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
35.
_________ is a sample in which each individual or object in the entire population has na equal chance of being selected.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
36.
_______ is the entire group of objects or individuals considered for a survey.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile

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