1|Page
Minitab Assignment Number 2
Label Lname_Fname_Minitap Number 2
1. The following data are commute times (in minutes) from your professoràhome to work for
25 consecutive workdays. Key the data in Minitab in C1 and name the column Commute Times.
a. Construct a histogram in Minitab of your professoràcommute times. Your first Minitab
assignment walks you through how to create a histogram, and there are videos in your Canvas
course.
Make sure your histogram includes the following:
ppropriate title
ppropriate time units identified in the plot on the x-axis (title)
ootnote explaining what the class length is and an example of the first-class lower
and upper boundaries.
Copy graph below this line and size it as: 4 X 6
Explain the shape of the histogram in detail, what, why, when, how
Questions:
What is the shape of the histogram, and
explain in detail the what, why, when, how,
etc.?
What is the class length?
What would you recommend at this point
and why?
b. The 21st commute time, 37.4 minutes, reflects a day when your professor left home without
his laptop computer and had to turn around to retrieve it. Remove this outlier from the data
set and reconstruct the histogram.
Copy the second histogram below this line and size it 4 X 6
2|Page
Explain the shape of the histogram in detail, what, why, when, how
What is the shape of the histogram and
explain in detail the what, why, when, how,
etc.?
What is the class length?
What would you recommend at this point
and why?
Run Basic Statistics on the data in column C1.
.> Go to Stat>Basic Statistics>Display Distributive Statistics and select the column. Select the
Statistics button and select the options we have learned in class: mean, sd, variance, coefficient
of variation, first quartile, median, third quartile, interquartile range, mode, minimum,
maximum, range.
Statistics
Variable Mean SE Mean StDev Variance CoefVar Minimum
C2
Variable
C2
18.131
0.0883
Range
N for
IQR Mode Mode
1.900 0.585
0.442
18
0.195
5
2.44
Q1 Median
17.200 17.850
Q3 Maximum
18.100 18.435
19.100
3|Page
Answer these questions
By looking at the results, what makes you
think the shape is symmetrical? Explain
Explain coefVar
Explain Q1, Q3, IQR
Explain the variance and how we use it
What is the interval for 68, 95, 99
percentage of the data?
What would be your cursory prediction be
about the professoràcommute times?
2. Below is a stem-and-leaf plot of the NBA teams0ayroll salaries for the 2013-14 season,
in millions of dollars.
4|Page
(a) How many teams had salaries of at least 70 million dollars?
(b) What is the median team salary for the 30 NBA teams?
11
67.7
(c) What percentage of teams had salaries at least 59 million?
(d) What salary represents the 75 percentile?
(e) What shape is the data?
(f) What percentile is the fifth position number of 59 million?
3. Below are the ages at which U.S. presidents began their first terms, increasing in order from
George Washington to Barack Obama, with Grover Cleveland serving 2 nonconsecutive terms.
This is an entire population of data, not a sample.
(a) Create a histogram and run basic statistics.
5|Page
Explain what you see in detail:
Statistics
Variable Mean SE Mean StDev Variance CoefVar Minimum
C3
54.432
0.895
5.935
Variable
Range
N for
IQR Mode Mode
C3
27.000 6.750
51, 54
35.228
5
The model age range is 54-57
There are two modes 54 and 51
The shape of the histogram is symmetric
The oldest is 69 and youngest is 42
10.90
Q1 Median
42.000 51.000
Q3 Maximum
54.500 57.750
69.000

Purchase answer to see full
attachment