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Analytics in Sports Fall 2018
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#Post#: 11--------------------------------------------------
Week of 8/27 (Week 1)
DIR By: mac
Date: August 27, 2018, 4:22 pm
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This is the thread where you post about the readings in
Mathletics and SRS. You are required to post at least once per
day. Anything beyond that is extra.
#Post#: 14--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: JosePH
Date: August 28, 2018, 11:38 am
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I found Bill James's Baseball Pythagorean Theorem to be
especially interesting. Being able to calculate win percentage
based on simple statistics is pretty cool. The little degree of
difficulty, being less than 10%, makes it all the more
impressive.
#Post#: 15--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: DylanGross
Date: August 28, 2018, 11:44 am
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Bill James, who was credited with creating the Baseball
Pythagorean Theorem, is able to predict a team's win percentage.
The distance that the estimated win percentage is away from the
actual win percentage is an absolute value, which can then be
statistically represented as MAD, or Mean Average Deviation.
This is the average of the absolute values.
#Post#: 16--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: JosePH
Date: August 28, 2018, 11:48 am
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Runs Created is a very useful stat that can be used to evaluate
two players and distinguish a superior. Although it can at times
be misleading, when used properly it can be invaluable to owners
and front office personnel.
#Post#: 17--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: DylanGross
Date: August 28, 2018, 11:54 am
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The Runs Created statistic offers a different approach to
analyzing more than one set of numbers. When you first compare
Ichiro and Nomar's stats, it's clear that Ichiro had a better
season. However, when using the runs created statistic, it
suggests that Ichiro's season wasn't as better as it first
seemed.
#Post#: 18--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: Isaias2830
Date: August 28, 2018, 11:56 am
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Pages 3-5 of our book, Mathletics is about how you could use
"Baseball's Pythagorean Theorem" to estimate a teams winning
percentage. the formula for to estimate a teams winning
percentage is runs scored squared divided by runs scored squared
plus runs allowed squared. after you find your answer, you will
then find the absolute error.
#Post#: 19--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: Isaias2830
Date: August 28, 2018, 12:02 pm
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Chapter two in our book Mathletics is about comparing the
statistical seasons of Ichiro Suzuki in 2004 and Nomar
Garciaparra in 1997. The book uses stats like slugging
percentage which takes in to account the total bases they've
gotten from hits and walks. In this stat Nomar won by a
considerable amount. Another big stat this chapter used was runs
created per game. In this stat Ichiro beat Nomar, It is
estimated that a team consisting of nine Ichiro's would score
about 8 runs a game.
#Post#: 22--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: Gggggggggggggabino perez
Date: August 28, 2018, 12:15 pm
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chapter two was about Ichiro's. Nomar's statistics and comparing
the two.
SRS was about using different kinds of charts to organize your
data. Ability, performance, and random chance are all important
variables that you need to account for.
#Post#: 23--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: Isaias2830
Date: August 28, 2018, 12:17 pm
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An example of law of large numbers is during game three of the
2018 NBA Finals, Stephen Curry shot 1 for 10 from the three
point line. In this game Curry shot 10 percent from three, but
his average percentage from three that season was 42 percent. In
a small sample size it looked like he wasn't a great shooter,
but when you look at the body of work he is arguably the
greatest shooter in NBA history.
#Post#: 24--------------------------------------------------
Re: Week of 8/27 (Week 1)
DIR By: Kaitlyn Morenzone
Date: August 28, 2018, 12:17 pm
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The Runs-Created Approach shows more statistical relevance than
the usual batting average. The Runs-Created Approach adds more
key statistics to its formula such as the number of games' worth
of outs and extra-base hits. This formula is still being used in
modern baseball.
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