EXAM REVIEW – PART 
1.
The board members of a provincial organization receive a car allowance for travel to meetings.
Below are the distances the board logged last year (in km):
44
18
125
80
63
42
35
68
52
75
260
96
110
72
51
c)
a)
b)
Determine the mean and standard deviation for this data,
rounded to 1 decimal place.
Identify any outliers.
Determine the quartiles, interquartile range and semi-interquartile range for this data.
Q1
Q2
Q3
d)
2.
Illustrate this data using a box-and-whisker plot, labelling any key values.
Identify the type of sampling (simple random, systematic, stratified, cluster, multi-stage,
voluntary-response, or convenience) in each of the following scenarios:
a)
Barney picks names out of a hat;
____________________
b)
student council conducts a survey on student parking at OLMC
by randomly selecting 50% of the grade 11 students and 50%
of the grade 12 students;
____________________
the Ministry of Education randomly selects Dufferin-Peel CSSB,
then OLMC, then the MDM4U1 class for testing;
____________________
a hockey card collector trades every fifth card in his collection.
____________________
c)
d)
3.
Identify the type of bias (sampling, non-response, measurement, or response) in each of the
following scenarios:
a)
4.
5.
6.
A grade 9 health class was asked to answer the question,
“Are you comfortable with your present body weight?”
____________________
b)
A phone questionnaire was conducted and many people with
call display did not answer the phone.
____________________
c)
Parents of high-school students were asked; “Do you think that
students should be released from school a half hour early on
Fridays, free to leave the building and get into trouble?”
____________________
Identify the type of relationship (cause-and-effect, common-cause, reverse cause-and-effect,
accidental, presumed) for each scenario given below:
a)
alcohol consumption and the incidence of automobile accidents;
____________________
b)
a student scores well on both her physics exam and her
calculus exam;
____________________
c)
an employee receives an increase in pay and improves his job
performance in the same year.
____________________
Identify the independent and the dependent variable and classify the type of linear correlation that
you would expect to see in each of the following correlational studies:
a)
hours of study and exam score;
_______________________________
b)
cholesterol level and the amount of fibre consumed.
_______________________________
The environment club is interested in the relationship between the number of canned drinks sold in
the cafeteria and the number of cans that are recycled. The following data was collected:
# of canned drinks sold
# of cans recycled
18
2
23
4
25
1
28
6
30
8
30
4
36
10
21
3
26
4
32
7
Create a scatter plot manually and classify the linear correlation.
Classify:
_________________________