Instant replay in sports (statistics)

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    12-May-2015

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  • 1.Instant Replay In Sports
    Jonathan Nagar
    Weston McCollum
    Cody Kustrin
    De Nguyen

2. Introduction
INSTANT REPLAY: The recording and immediate playback of a part of a live television broadcast of a sporting event (used by officials).
ISSUE: Controversial calls continue to affect the outcome of sporting events.
3. Instant Replay Jurisdiction
National Football League (NFL)
Each team is allowed two instant replay reviews a game (coach challenges).
Challenges can be used on:
scoring plays
pass completions
out-of-bounds plays
forward passed
fumbles
down-by-contact plays
forward progress plays
touching of a kick and placement of the football.
4. Instant Replay Jurisdiction
Major League Baseball (MLB)
Reviews boundary home run calls to determine:
Fair (home run) or foul.
Whether the ball actually left the playing field.
Whether the ball was subject to spectator interference.
5. Instant Replay Jurisdiction
ATP and WTA World Tour Tennis
Review calls on balls in or out of the playing surface.
National Hockey League (NHL)
Review calls on controversial goals scored.
National Basketball League (NBA)
Review shots made before the buzzer.
6. Questions To Be Answered
Is Instant Replay at an appropriate level in sports?
Does Instant Replay have a positive impact on sports?
Does Instant Replay ultimately make the games more fair?
7. Questions To Be Answered
Concerns:
Does Instant Replay slow down the pace of the game?
Is it practical to implement Instant Replay in Division II and III sports?
8. World Cup: England vs. Germany
9. Additional Controversies
MLB:
Detroit Tigers vs. Cleveland Indians
Galarraga Perfect Game lost on final call.
Philadelphia Phillies vs. Florida Marlins
Gaby Sanchez walk off hit ruled foul.
(WS) San Francisco Giants vs. Texas Rangers
Double play was ruled safe at first base.
10. Main Research Hypothesis
Question: Should Instant Replay be further implemented in sports?
11. Data Collection & Preparation
Collection Methods
Used Survey Monkey (Sample Size 40)
10 MC Scaled Response Questions.
Used on Facebook as an event.
Interviews (Sample Size 20)
Target Audience
Sports Fans/Followers
12. Descriptive Statistics
How many hours a week do you spend watching sports?
0 to 5 - 13
6 to 10-14
11 to 15- 4
16 to 20 - 6
20+- 3
13. Descriptive Statistics
Mode is 6 to 10 hours
Median is 6 to 10 hours
Mean is 9.1125
14. Descriptive Statistics
Which sport do you watch the most?
Baseball - 11
Basketball - 3
Football - 23
Hockey - 1
Soccer - 1
Tennis- 0
Other - 1
15. Probability
Probability of choosing someone from our data who watches football the most.
P(E)=23/40=.575
Probability of choosing someone that does not watch football the most.
Using the complement rule: P(E)=1-P(E)=.425
16. Descriptive Statistics
Have you ever played sports at a competitive level?
Yes - 32
No - 8
17. Descriptive Statistics
Instant replay has a positive impact on sports.
Strongly Agree - 23
Somewhat Agree - 14
No Opinion - 2
Somewhat Disagree - 1
Strongly Disagree - 0
18. Hypothesis Test for Positive Impact
19. Descriptive Statistics
Instant replay is at an appropriate level in sports.
Strongly Agree - 5
Somewhat Agree - 24
No Opinion - 5
Somewhat Disagree - 5
Strongly Disagree - 1
20. Hypothesis Test for Appropriate Level
21. Descriptive Statistics
Instant replay slows down the pace of the game.
Strongly Agree - 11
Somewhat Agree - 15
No Opinion - 1
Somewhat Disagree - 11
Strongly Disagree - 2
22. Hypothesis Test for Pace of Game
23. Descriptive Statistics
It is practical to implement instant replay in Division 2 and 3.
Strongly Agree - 5
Somewhat Agree - 12
No Opinion - 7
Somewhat Disagree - 7
Strongly Disagree - 9
24. Hypothesis Test for Replay in Division II and III
25. Descriptive Statistics
Instant replay corrects official/referee decisions.
Strongly Agree - 25
Somewhat Agree - 13
No Opinion - 1
Somewhat Disagree - 1
Strongly Disagree - 0
26. Hypothesis Test for Correcting Mistakes
27. Descriptive Statistics
Instant replay ultimately makes the games being played more fair.
Strongly Agree - 19
Somewhat Agree - 17
No Opinion - 2
Somewhat Disagree - 2
Strongly Disagree - 0
28. Hypothesis Test for Fairness
29. Descriptive Statistics
30. Conclusion and Recommendations
The average (mean) for hours of sports watched per week was 9.1125
75% of the sample played sports at a competitive level at some point in their lives.
37 of the 40 people surveyed agreed that instant replay has a positive impact on sports.
65% also agreed that usage of instant replay slows down the game.
31. Conclusions and Recommendations
29 of the 40 people sampled agreed that instant replay is at an appropriate level at this time.
23 of 40 feel that it is not practical to implement instant replay in Division II and Division III sports.
95% of the sample agreed that instant replay corrects mistakes made by officials.
90% of the people surveyed agreed that instant replay makes the game play more fair.
32. Conclusions and Recommendations
Given the data collected, we determined that instant replay should be implemented across all professional sports.
For the sports in which instant replay is already utilized, it should be refined and used to a further degree.
As a group, we collectively believe in the usage of instant replay for professional and college sports.
33. Suggestions for Improving Study
Conduct survey to broader age groups.
Ask more questions regarding each sport individually.
Acquire a larger sample size with more participants.

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