# Project for Statistics

In the attachment below is the question and the excel contains the data to be reviewed. Let me know if you have any questions
su18_project_1_nfl___basic___summary_2.docx

_nfl_qb_statistics_from_week_1__2_.xlsx

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MATH 153
T. McKoy
Summer 2018 Project 1- 2017 NFL Quarterback Week 1 Stats Analysis (Part 2)
Context: Every year NFL teams set out on the journey to achieve the ultimate goal in U.S. sports; winning
the Super Bowl. Much of each teamâ??s success depends on the quality and performance of the
quarterback; the only player to touch and decide what to do with the football on each offensive play.
The attached spreadsheet provides a first week snapshot of 31 quarterbacks who began the 2017 NFL
season. The variables included are the ranking, quarterback name, team, number of completions,
number of attempts, completion percentage, total yards, and quarterback rating.
As an example to explain these values, after week 1 the 12h ranked quarterback was Ben Roesthlisberger
of the Pittsburgh Steelers. In his first game 24 of his 36 attempted passes were caught by a member of
his team. This translates to a 66.7% completion percentage. Those completions, along with the playerâ??s
yards gained after the catch, earned the team 263 total yards. These statistics, in addition to others that
arenâ??t recorded here, are used to calculate his rating as a 95.
Use these data to complete the following steps to constitute the first project for this semester.
1. Looking at the total yards gained in week 1, these data can be separated into high, medium, or
low performances. What type of summary is the table below considered? Describe the
Performance
Stellar
Good
Mediocre
Frequency
6
14
11
2. Explain whether â??Performanceâ? is a qualitative or quantitative variable.
3. Use the table given above to sketch a bar chart. Provide the chart.
4. Would the quarterback rating be considered a discrete or continuous quantitative variable?
Explain.
5. Although the total yards are recorded in whole number form, making them discrete, explain
why yards is actually a continuous variable.
6. Use the number of attempts to create a relative frequency distribution. (Round the relative
frequency values to three decimal places.)
1
MATH 153
T. McKoy
Summer 2018 Project 1- 2017 NFL Quarterback Week 1 Stats Analysis (Part 2)
7. Below is a stem-and-leaf plot for the number of completions from week 1. This rudimentary
display has a few important features: 1) it is often used to provide a quick look at the shape, the
center, and the spread of a distribution of the data, 2) the original variable values recorded are
preserved, and 3) if the original data list is re-created from this display as they are provided, an
ordered list of the values will be shown, something useful in other particular statistical measures
and displays. Review these features in your textbook, then, based on feature 1) and 3), describe
the distribution, and explain how the values of 12 and 26 are represented, respectively, in the
stem-and-leaf plot.
0
1
1
2
2
799
1244
6667
011223444
56667778899
8. Use the full list of completions to create a frequency histogram. You should do this using 6
classes, with a class width of 4, and the lower class limit for the first class being 7. Whether you
do this by hand or using Statcrunch, be sure you use and display the correct information on the
horizontal axis in your histogram. Provide the histogram.
9. Provide the 5-number summary for the list of quarterback ratings. In addition, calculate the
lower and upper fences that would be used to identify any outliers.
10. Using the 5-number summary you just found, create a boxplot for the quarterback ratings. Be
sure to draw the boxplot to scale and identify the distribution seen.
What you need to turn in:
A.
B.
C.
D.
A cover sheet containing your name and identification as Project 1 for Summer 2018.
Typed responses to each of the tasks above (in order).
Print-outs or hand-drawn displays that are requested, inserted in appropriate order.
Project is due at beginning of class…
2
Rk
1
2
3
4
5
6
7
8
9
9
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Player
Alex Smith
Matt Ryan
Aaron Rodgers
Carson Wentz
Jared Goff
Matthew Stafford
Drew Brees
Carson Palmer
Dak Prescott
Ben Roethlisberger
Derek Carr
Marcus Mariota
Kirk Cousins
Tyrod Taylor
DeShone Kizer
Eli Manning
Trevor Siemian
Mike Glennon
Brian Hoyer
Philip Rivers
Josh McCown
Cam Newton
Andy Dalton
Russell Wilson
Scott Tolzien
Blake Bortles
Joe Flacco
Deshaun Watson
Tom Savage
Team Completions Attempts Percentage Yards Rating
28
35
80
368 148,6
KC
27
32
84,4
346
143
MIN
21
30
70
321 116,1
ATL
28
42
66,7
311
86,5
GB
26
39
66,7
307
96,8
PHI
21
29
72,4
306 117,9
LA
29
41
70,7
292 113,1
DET
27
37
73
291 104,7
NO
27
48
56,3
268
53,1
ARI
24
39
61,5
268
90,5
DAL
16
36
44,4
267
70
NE
24
36
66,7
263
95
PIT
22
32
68,8
262 114,3
OAK
25
41
61
256
78,9
TEN
23
40
57,5
240
72,9
WAS
16
28
57,1
224
92
BUF
20
30
66,7
222
85,7
CLE
29
38
76,3
220
78,8
NYG
17
28
60,7
219
94,2
DEN
26
40
65
213
86,8
CHI
24
35
68,6
193
70,3
SF
22
33
66,7
192
99,6
LAC
26
39
66,7
187
56,2
NYJ
14
25
56
171
87,3
CAR
16
31
51,6
170
28,4
CIN
14
27
51,9
158
69,7
SEA
9
18
50
128
33,8
IND
11
21
52,4
125
86,4
JAX
9
17
52,9
121
71
BAL
12
23
52,2
102
60,4
HOU
7
13
53,8
62
66,8
HOU
Comp – Number of completed (caught) passes
Att – Number of passes thrown
Pct – Relative frequency (as percent) of passes completed to passes thrown
Yds – Total yards team gained through completed passes
Rate – The NFL rating system score earned by the quarterback for having the given statistics

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