ECON 1008 Data Analytics I
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Examination Paper – 2022 Semester 2
ECON 1008
Data Analytics I
TRUE FALSE (25 POINTS)
Answer ALL questions on the TRUE/FALSE answer sheet
All 25 question is worth one (1) point
TF 1) Correlation is Causation
A) TRUE B) FALSE
TF 2) A cumulative frequency distribution lists the proportion of observations that are
within or below each of the classes.
A) TRUE B) FALSE
TF 3) A pie chart is always preferable to a bar chart, when describing a nominal
variable.
A) TRUE B) FALSE
TF 4) The lowest value in a set of data is 140, and the largest value is 270. If the
resulting frequency distribution is to have ten classes of equal width, the common class width will be 15.
A) TRUE B) FALSE
TF 5) Chebyshev's theorem only relates to symmetric histograms.
A) TRUE B) FALSE
TF 6) In a negatively skewed distribution, the mean is greater than the median.
A) TRUE B) FALSE
TF 7) Quartiles divide the values in a data set into four parts of equal size.
A) TRUE B) FALSE
TF 8) Occupation of a mortgage applicant is an ordinal data.
A) TRUE B) FALSE
TF 9) The coefficient of variation gives an indication of the magnitude of the standard
deviation relative to the mean.
A) TRUE B) FALSE
TF 10) The standard deviation is expressed in terms of the original units of
measurement, but the variance is not.
A) TRUE B) FALSE
TF 11) The modal class of a histogram is the class with the largest number of
observations
A) TRUE B) FALSE
TF 12) A histogram is an appropriate chart for nominal data
A) TRUE B) FALSE
TF 13) Statement
A) TRUE B) FALSE
TF 14) Statement
A) TRUE B) FALSE
TF 15) Statement
A) TRUE B) FALSE
TF 16) Statement
A) TRUE B) FALSE
TF 17) Statement
A) TRUE B) FALSE
TF 18) Statement
A) TRUE B) FALSE
TF 19) Statement
A) TRUE B) FALSE
TF 20) Statement
A) TRUE B) FALSE
TF 21) Statement
A) TRUE B) FALSE
TF 22) Statement
A) TRUE B) FALSE
TF 23) Statement
A) TRUE B) FALSE
TF 24) Statement
A) TRUE B) FALSE
TF 25) Statement
A) TRUE B) FALSE
MULTIPLE CHOICE (75 POINTS)
Answer ALL questions on the MULTIPLE CHOICE answer sheet
All 25 questions are worth three (3) points each
1) Which of the following may be determined from the height of the bar in a relative frequency histogram
A.) The sample size
B.) The population size
C.) The proportion of observations that fall into that class
D.) The number of observations that fall into that class
2) A survey of a magazine’s subscribers indicates that 30% own a home, 70% own a car, and 80% of the homeowners who subscribe also own a car. What proportion of subscribers own both a car and a house?
A.) 0.20
B.) 0.24
C.) 0.21
D.) 0.15
3) Given that Z is a standard normal variable, the variance of Z
A.) is always greater than 2.0
B.) is always greater than 1.0
C.) is always equal to 1.0
D.) cannot assume a specific value
4) If and B are mutually exclusive events with P(A) = 0.80, then P(B)
A.) can take any value between 0 and 1.
B.) ban take any value between 0 and 0.80.
C.) can be larger than 0.80
D.) cannot be larger than 0.20
5) In a sample of 10.000 observations from a normal population, how many would you expect to lie beyond three standard deviations of the mean?
A.) about 27
B.) about 270
C.) none
D.) about 3.
6) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
7) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
8) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
9) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
10) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
11) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
12) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
13) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
14) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
15) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
16) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
17) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
18) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
19) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
20) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
21) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
22) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
23) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
24) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
25) Question
A.) Answer A
B.) Answer B
C.) Answer C
D.) Answer D
2022-10-28