2019W2 - Assignment 1 - January 2020
Due Jan 22 at 11:59pm
Points 100
Questions 19
Available Jan 8 at 8am - Jan 22 at 11:59pm 15 days
Time Limit None
This quiz was locked Jan 22 at 11:59pm.
Attempt History
LATEST
Attempt
Time
Score
Attempt 1
10,102 minutes
87 out of 100
Score for this quiz: 87 out of 100
Submitted Jan 20 at 11:33pm
This attempt took 10,102 minutes.
Data Spreadsheet for Assignment 1:
Asst1_2019W2_Datasets.xlsx
9 / 9 pts
Question 1
Download the data spreadsheet Asst1_2019W2_Datasets.xlsx .
Refer to the Edmonton Oilers data spreadsheet and glossary. For
each of the following variables, decide whether it is best considered
as quantitative, categorical, or an identifier variable.
Uniform #: Identifier
Flag: Categorical
Position: Categorical
Age: Quantitative
Height: Quantitative
Shoots: Categorical
GP: Quantitative
PIM: Quantitative
+/–: Quantitative
Salary: Quantitative
S% Quantitative
TOI: Quantitative
Answer 1:
Correct!
Identifier
Answer 2:
Correct!
Categorical
Answer 3:
Correct!
Categorical
Answer 4:
Correct!
Quantitative
Answer 5:
Correct!
Quantitative
Answer 6:
Correct!
Categorical
Answer 7:
Correct!
Quantitative
Answer 8:
Correct!
Quantitative
Answer 9:
Correct!
Quantitative
Answer 10:
Correct!
Quantitative
Answer 11:
Correct!
Quantitative
Answer 12:
Correct!
Quantitative
12 / 12 pts
Question 2
Again referring to the Edmonton Oilers data, what are the units for
each of the following variables? If there are no units, such as for a
categorical or identifier variable, choose *No units*. Note: For Yrsexp,
R means "rookie", a first-year player; that is, 0 years of experience.
Uniform #: *No units*
Weight: Pounds
YrsExp: Years
PIM: Minutes
GW: Goals
TOI: Minutes
Answer 1:
Correct!
*No units*
Answer 2:
Correct!
Pounds
Answer 3:
Correct!
Years
Answer 4:
Correct!
Minutes
Answer 5:
Correct!
Goals
Answer 6:
Correct!
Minutes
Question 3
4 / 8 pts
For each of these variables, decide whether the data are time series
or cross-sectional:
a. The number of winter coats sold be each salesperson in a clothing
store in October.
Cross-sectional
b. The number of winter coats sold in a clothing store in each month
last year.
Cross-sectional
c. The average diameter of trees brought to a sawmill in each week
of a year.
Time Series
d. The age of each fan in attendance at a Vancouver Canucks
hockey game.
Time Series
Answer 1:
Correct!
Cross-sectional
Answer 2:
ou Answered
Cross-sectional
orrect Answer
Time Series
Answer 3:
Correct!
Time Series
Answer 4:
orrect Answer
Cross-sectional
ou Answered
Time Series
5 / 5 pts
Question 4
Refer to the worksheet ch02_MCSP_Eddies2015 in the
Asst1_2019W2_Datasets.xlsx
spreadsheet. (You probably
already downloaded the spreadsheet for the Edmonton Oilers
question.) For details about the case, read the Mini-case Study
Project called Eddie's Hang-up Display, found at the end of Chapter 2
of the textbook.
We often explore geographic data in regions, and for this question,
we'll consider the Western Canada region to be British Columbia and
Alberta. Create a frequency table of the combined BC+Alberta
"Sessions" (not Pages or New Users) by month from the Eddie's
Hang-up Display data. The table is provided for you to fill in.
Report two decimals for percents (i.e. round up or down using
the usual convention).
Do NOT use units, spaces or commas in your answers.
Month
Count
Percent
January
14083
9.08
February
13286
8.57
March
14697
9.48
April
9720
6.27
May
12608
8.13
June
13200
8.51
July
12621
8.14
August
12082
7.79
September
13613
8.78
October
14445
9.32
November
14371
9.27
December
10328
6.66
Total
155054
Answer 1:
Correct!
14083
orrect Answer
14,083
orrect Answer
13286
orrect Answer
13,286
Answer 2:
Correct!
orrect Answer
9.08
9.083
Answer 3:
Correct!
orrect Answer
13286
13,286
100.00
Answer 4:
Correct!
8.57
orrect Answer
8.569
orrect Answer
8.56
Answer 5:
Correct!
orrect Answer
14697
14,697
Answer 6:
Correct!
9.48
orrect Answer
9.479
orrect Answer
9.47
Answer 7:
Correct!
orrect Answer
9720
9,720
Answer 8:
Correct!
6.27
orrect Answer
6.269
orrect Answer
6.26
Answer 9:
Correct!
orrect Answer
12608
12,608
Answer 10:
Correct!
orrect Answer
8.13
8.131
Answer 11:
Correct!
orrect Answer
13200
13,200
Answer 12:
Correct!
orrect Answer
8.51
8.513
Answer 13:
Correct!
orrect Answer
12621
12,621
Answer 14:
Correct!
orrect Answer
8.14
8.140
Answer 15:
Correct!
orrect Answer
12082
12,082
Answer 16:
Correct!
orrect Answer
7.79
7.792
Answer 17:
Correct!
orrect Answer
13613
13,613
Answer 18:
Correct!
orrect Answer
8.78
8.780
Answer 19:
Correct!
orrect Answer
14445
14,445
Answer 20:
Correct!
9.32
orrect Answer
9.316
orrect Answer
9.31
Answer 21:
Correct!
orrect Answer
14371
14,371
Answer 22:
Correct!
9.27
orrect Answer
9.268
orrect Answer
9.27
Answer 23:
Correct!
orrect Answer
10328
10,328
Answer 24:
Correct!
orrect Answer
6.66
6.661
Answer 25:
Correct!
orrect Answer
155054
155,054
Question 5
2 / 2 pts
Refer to the MarketCap&StockPrice worksheet in the
Asst1_2019W2_Datasets.xlsx
spreadsheet. (You probably
already downloaded the spreadsheet for the first and third questions
on this assignment.) The data are from Canadian Business’s The
Investor 500 and have market capitalization and stock prices for
Large, Mid and Small Cap companies.
Market Cap data are in columns E, J, O.
Stock Price data are in columns D, I, N.
Use the Large Cap data (column E) for this and other questions.
What was the mean market capitalization (in 2008) of these 50 Large
Cap companies?
Do NOT use units, spaces or commas in your answer. Round to
the nearest whole number.
Correct!
orrect Answers
24,259
Between 24,258 and 24,260
Question 6
2 / 2 pts
What was the median market capitalization (in 2008) of the 50 Large
Cap companies?
Do NOT use units, spaces or commas in your answer. Round to
the nearest whole number.
Correct!
orrect Answers
19,705
Between 19,703 and 19,705
Question 7
3 / 3 pts
Why do you think one is higher than the other? (Hint: after you
answer, you may want to check your intuition with the histograms of
this data in the following question.)
The mean is higher than the median because the data are rightskewed .
Answer 1:
Correct!
mean
Answer 2:
Correct!
median
Answer 3:
Correct!
right-skewed
Question 8
4 / 6 pts
Refer again to the Market Cap (column E) of the 50 Large Cap
companies. See the picture for three histograms, each using a
different "bin width" in each case: $1,000, $5,000, and $25,000. The
same vertical and horizontal axes were used for all three for easier
comparison. For each of the following statements, decide whether it
is more likely true or false.
a. On the vertical axis counts would be a better choice than relative
frequencies.
TRUE or FALSE? → True
b. The first histogram is the best because it shows the small
differences between companies.
TRUE or FALSE? → False
c. The second histogram is the best because it has an appropriate
amount of grouping of companies into bins.
TRUE or FALSE? → True
d. The third histogram is the best because it doesn’t have any gaps
between bars.
TRUE or FALSE? → False
e. All three histograms show the skewed distribution.
TRUE or FALSE? → False
f. There are no clear outliers in the distribution.
TRUE or FALSE? → True
Answer 1:
ou Answered
True
orrect Answer
False
Answer 2:
Correct!
False
Answer 3:
Correct!
True
Answer 4:
Correct!
False
Answer 5:
orrect Answer
True
ou Answered
False
Answer 6:
Correct!
True
10 / 10 pts
Question 9
Now refer to Stock Price data in columns D, I, N. Here is a table of
the five-number summary for two of the three groups. You are to
provide the summary for the Mid Cap group (Column I).
Use Excel Functions (MIN, QUARTILE, MEDIAN, MAX) to do the
computations! Other methods may give different answers,
which will not be not accepted here.
Report your answers to ONE decimal place. Make sure to round
using the usual convention.
Do NOT use units, spaces or commas in your answers.
Large
Cap
orrect Answer
Small Cap
Min
6.1
1.5
0.1
Q1
34.6
13.7
4.0
Median
45.1
20.7
8.0
Q3
52.7
30.6
13.8
Max
172.6
314.8
128.0
Answer 1:
Correct!
Mid Cap
1.5
1.46
Answer 2:
Correct!
orrect Answer
13.7
13.73
Answer 3:
Correct!
20.7
orrect Answer
20.66
orrect Answer
20.6
Answer 4:
Correct!
orrect Answer
30.6
30.64
Answer 5:
Correct!
314.8
orrect Answer
314.75
orrect Answer
314.7
0 / 2 pts
Question 10
Real Estate Pricing
A study of a sample of 1057 houses reports the following percentages of houses
falling into different Price and Size categories:
Size
Price
Small
Med Small
Med Large
Large
Low
61.5%
30.4%
5.4%
2.7%
Med Low
35.2%
45.3%
17.6%
1.9%
Med High
5.2%
26.4%
47.6%
20.8%
High
2.4%
4.7%
21.7%
Are these column, row, or total percentages, and why?
ou Answered
Column percentages. The row sums add up to 100%.
Column percentages. Price is a quantitative variable.
Row percentages. The size categories are the totals of 100% for
each row.
orrect Answer
Row percentages. The row sums add up to 100%.
Total percentages. The other choices wouldn't make sense.
Question 11
2 / 2 pts
What percent of the low priced houses were large?
Report your answer as a percent to one decimal place with NO
percent sign, e.g., if the answer is 80.88% you would type 80.9).
Correct!
orrect Answers
2.7
Between 2.69 and 2.71
2.7 (with margin: 0)
Question 12
0 / 2 pts
Based on this table, what percent of all houses were in the high price
category?
71.2%
2.4%
25.0%
ou Answered
100.0%
71.2%
orrect Answer
Cannot tell from the information given.
Question 13
2 / 2 pts
Among the houses in the high price category, what percent were
large or medium large?
(Please report your answer as a percent to one decimal place with no
percent sign, e.g., if the answer is 80.88% you would type 80.9)
Correct!
orrect Answers
92.9
Between 92.89 and 92.91
92.9 (with margin: 0)
Question 14
2 / 2 pts
Create a segmented bar chart (100% stacked column) of price and
size. Keep this bar chart to include as part of Question 18. There
should be four vertical bars, one for each of the four levels of price.
Referring to the chart, what is the association between price and
size?
Correct!
The higher the price, the larger the size.
The higher the price, the smaller the size.
The lower the price, the larger the size.
There is no association.
More information is needed to answer this question.
Question 15
0 / 2 pts
Refer to the Question 26 (Smartphone Use) at the end of Chapter 2
in the textbook. The data give a breakdown by age group of
responses to the question “How close do you keep your
cellphone/smartphone to you when you sleep at night?” Here are a
segmented bar chart and a clustered bar chart to compare age
groups. Both were created using default settings in Excel.
How would you rate the evidence of an association between Phone
Location and Age group?
None
Weak
ou Answered
Moderate
orrect Answer
Strong
Question 16
2 / 2 pts
Choose the most appropriate one of the following statements about
the two displays in the previous question.
The Segmented bar chart is ALWAYS the preferred one
The Clustered bar chart is ALWAYS the preferred one.
Correct!
Both bar charts are useful; the choice depends on the context and
what is to be highlighted.
Question 17
0 / 1 pts
How many formatting differences do you see between the two
graphs?
Formatting includes all visual aspects: title, legend, axis
numbers/units/labels, bars, gridlines, colours, fonts -- in short,
anything you see!
0
1
ou Answered
2
orrect Answer
3 or more
Question 18
28 / 28 pts
Make a PDF!
This question requires you to create plots and put them into a single
pdf. When you have answered all of these subquestions and
included them in one pdf, please use "Choose a File" to upload your
answers.
Subquestions:
a. (8 marks) Return to the Eddie’s Hang-up Display data.
Create a bar chart (vertical bars — what Excel calls a
"column" chart) of Sessions, Pages, and New Users in
March. Put all three variables on the same chart (i.e. a
clustered bar chart). Sort the regions in decreasing number
by pages. (Some bars will be nearly invisible because of the
wide range in numbers.) Remember to give your bar chart
appropriate titles and labels.
b. (8 marks) Return to the Market Cap data. It’s your turn to
make a histogram. Using the Mid Cap (column J) using a bin
width of 500 ($ millions). If any market capitalization value
falls on the boundary between two ranges, put that
observation in the lower bin. (For example, a market cap of
1,500 would go in the 1,000–1,500 range on the first
histogram, not in the 1,500–2,000 range.) Remember to give
your histogram appropriate titles and labels on the horizontal
and vertical axes. Most importantly, remember to close up
the gaps between the bars!
c. (8 marks) Return to the Stock Price data. Use the completed
table in Question 9 to create side-by-side boxplots of the
three distributions. In your pdf just include the boxplots, not
the table. You can use the simple version, not the modified
boxplot version with fences and outliers (unless you really
want to!).
Note for boxplots: If you don't want to create the boxplot in
Excel, it is acceptable to create a neatly hand-drawn version,
scan it, and include it as part of the pdf.
d. (4 marks) Include the segmented bar chart you created in
Question 14.
Your completed pdf should include one bar chart, one histogram,
three side-by-side box plots, and one segmented bar chart.
 Assignment1Graphs.pdf
(https://canvas.ubc.ca/files/6769002/download)
0 / 0 pts
Question 19
Your completed pdf in Question 18 should include:
one bar chart,
one histogram,
three side-by-side box plots, and
one segmented bar chart..
Answer the following about Question 18:
Did you submit a bar chart? → Yes
Did you submit a histogram? → Yes
Did you submit three side-by-side boxplots? → Yes
Did you submit a segmented bar chart? → Yes
Warning: After attaching the pdf in Question 18, remember to
"Submit Quiz".
Once you press "Submit Quiz", you cannot change anything.
Answer 1:
Correct!
Yes
Answer 2:
Correct!
Yes
Answer 3:
Correct!
Yes
Answer 4:
Correct!
Yes
Quiz Score: 87 out of 100