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Archives for: September 2017

09/25/17

Basketball Statistics Referred Concepts: Statistics Lies, Uses and Misuses of Statistical Graphs

Basketball Statistics Referred Concepts:
Reflections about Statistics Lies, Uses and Misuses of Statistical Graphics

Basketball Statistics Analysis Referred Concepts
At the last weekly meeting of the concluded eBA Basketball Statistics Tracking Annual Clinic we were discussing the topic of the statistics lies which was initiated by the exposition "Statistics & Statisticians" at eBA ONLINE.

Here is the opinion of Paul H. Kvam and Joel Sokol from their work "Teaching Statistics with Sports Examples":

Statistical lies are most frequently committed in graphical form, where the eyes can be more easily deceived by spurious trends suggested in a picture. A common abuse is manipulating scales on charts and graphs by truncating, censoring or transforming the axis values.

The next figure shows two different charts showing an increase in average attendance at NCAA Women's Soccer games between 1998 and 2003. The first (blue)chart  is the default Microsoft Excel chart; many statistical software packages, in fact, will restrict both axes to a small set of values that contains the data, which helps the reader focus on chart differences more clearly. However, it also removes the scale of difference from the picture, which has potential to mislead readers who pay little attention to the axis labels.

Average Attendance at NCAA

Average Attendance at NCAA

Two different charts showing average attendance
at NCAA Women's Soccer (season) matches

The reader's sense of proportion can be manipulated further with image-based charts, which are standard in sports publications. As an example, the figure below graphs the season wins for the New England Patriots using clip-art in place of vertical bars.

Season Wins for the New England Patriots

Regular season wins for the New England Patriots, 2002-2003

While the height of the football icons corresponds to the information the graph is meant to communicate, the size of the footballs does not; the Patriots improved 56% in wins between 2002 and 2003, but the increase in area of the football icons is over 140%.

By Profesor

This post was extracted from an exposition by Prof. Roberto Azar in the
Statistics Tracking Clinics in eBA ONLINE

Read More at eBA Encyclopedia, search "statistics lies" in this blog and consult the eBA Basketball Statistics Analysis System.

This topic is resumed in the eBA Basketball Statistics Analysis System and at the eBA Encyclopedia.

'Basketball Registering Stats Referred Concepts'
is a Series of Notes edited Regularly Every Month !

To Read ALL the Articles in this Series, click here: Categories > Analysis Concepts


Actuality News
Experience the FIBA EuroBasket 2017 | Tournament Wrap Up

Experience the FIBA EuroBasket 2017 | Tournament Wrap Up






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09/24/17

Basketball Statistician's Digest:
The Illegal Defense in the NBA

Illegal Defense: A rather nebulous NBA rule that was called irregularly. It's designed to prevent the use of the zone defense, today legal in the NBA, it was more like a 3-second violation for the defense, in which no defender can stay in the lane for more than, well, 3 seconds. If you were on defense and were not aggressively guarding someone, you could not spend more than 3 seconds in the key at a time.

The term Illegal Defense has replaced Zone Defense in NBA usage. The rule now in place, supported by guidelines, defines approved coverage by defensive players and teams. Violations of these rules and guidelines will be noted as Illegal Defense.

Basketball Illegal Defense
Photograph: eHow.com

a. Illegal defenses which violate the rules and accepted guidelines set forth are not permitted in the NBA.

b. When the offensive team is in its backcourt with the ball, no illegal defense violation may occur.

The illegal defense guidelines needed to be eliminated because they have become problematic. They are problematic for our fans, who don't understand the rule.

They are problematic for the officials, who admittedly have had difficulty administering the rule. And finally, the teams have used the guidelines in a way that produces isolation basketball. Teams identify areas on the floor that they can use to their advantage in a given offensive matchup and this produces a real sameness of play amongst a lot of the teams. With isolation Basketball, a lot of NBA teams began standing around.

There is little player movement, there is little ball movement, and there is a decreasing amount of fastbreak opportunities. These developments began with the misuse of the illegal defense guidelines and therefore they needed to be eliminated. By eliminating them, the desired result is to get a game that once again is based on passing, cutting, player movement, and ball movement. A game that hopefully produces fastbreak opportunities because that is the way our game should be played.

( 'Basketball Tracking Stats Referred Concepts'
is a Series of Notes edited regularly )

This topic is resumed in the eBA Basketball Statistics Analysis System
at the eBA Encyclopedia > eBA System





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09/18/17

About the Over-and-Back Violation and Actuality News Video
in our Thursday's Basketball Statistics Referred Concepts

Basketball Statistics Referred Concepts:
About the Over-and-Back Violation ~ Concept & Statistics

Basketball Statistics Analysis Referred Concepts
"... A question about basketball rules... what is and how must we register the Basketball Over-and-Back Violation ? ... "

The Basketball Over-and-Back Violation is a violation that occurs when the offensive team has brought the ball into the frontcourt, returns the ball into the backcourt once it has positioned itself in the front court: the offensive team crosses the half court line and then crosses back into the back court.
As soon as a player from that team touches it in the backcourt, the ball is dead and is awarded to the opposing team for a throw-in.

American Rule: "Both feet and the ball" - if you are progressing from backcourt ( which includes the centre line ), you retain back court status until all three "points" are in the front court.
( This affects the over-and-back rule as well as the 8/10 second rule. )

European Rule: In FIBA, if you are touching the front court, you have front court status, but it is also possible to be simultaneously in both courts ( which is usually a problem if you have the ball ).

Examples:
1.1) A player is dribbling the ball in his backcourt . While continuing to dribble, the player steps with one foot into the front court.
Question: Has the 8/10 second count ended?
Answer: Yes. The player has front court status.
Q: Has the player committed an "Over-and-Back" violation ?
A: Not yet.

1.2) Continuing the above example, the player lifts the foot in the front court and resumes dribbling entirely in the back court.
Q: Has the player committed an "Over-and-Back" violation?
A: Yes. Once a player progressing from the back court to the front court touches the front court with a foot or the ball, he must proceed into the front court with his next manoeuvre.
[Note: The action described above is legal in US rules. However, the 8/10 second count would still be proceeding.]

2.1) A player, whose team has the ball in the back court, receives a pass with one foot on either side of the centre line. He stands there for a few seconds (and does not pivot).
Q: Has the player committed an "Over-and-Back" violation ?
A: Not yet.

ESPN Women College Basketball
Photograph: ESPN Women College Basketball


2.2) Continuing the above example, the player passes the ball to a teammate in the
a.-) front court, or b.-) backcourt. The receiving player touches the ball.
Q: Has the player committed an "Over-and-Back" violation ?
A: No in a.-), Yes in b.-).

2.3) Instead of passing, as in 2.2), the player chooses to dribble towards the front court.
Q: Has the player committed an "Over-and-Back" violation ?
A: No. As long as the player is progressing forward, the intent of the rule is being upheld.

3.0) A player holds the ball in the front court near the centre line. He 1) puts down a dribble, with the ball touching the centre line; or 2) steps partially on the centre line with one foot; or 3) brushes the ball against a teammate who is standing in the back court.
Q: Has the player committed an "Over-and-Back" violation ?
A: Yes in all cases. In 3.1), it is not a violation until the ball rebounds into the player's hand (or a teammate, for that matter). On a dribble, that will happen pretty quickly. In 3.2) and 3.3), the violation is called immediately. The centre line is considered to be part of the back court. [This case is the same in both FIBA and US rules.]


eBA Statistical Tracking= Finally, in all the cases, the eBA Basketball Statistics Analysis System register an Unforced Turnover, unless there is an opponent player influence – a close defense on the center line, by example – in this case a Forced Turnover is registered.

Read More at eBA CLINICS ONLINE, search "over-and-back violation" in this blog and consult the eBA Basketball Statistics Analysis System.

This topic is resumed in the eBA Basketball Statistics Analysis System
and at the eBA Encyclopedia.


'Basketball Registering Stats Referred Concepts'
is a Series of Notes edited regularly Every Month !

To Read ALL the Articles in this Series, click here: Categories > Analysis Concepts


Actuality News
Celebrate the Gold Medal with Slovenia!



Celebrate the Gold Medal with Slovenia!






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09/10/17

Phil Jackson: Step by Step ... • Phil Jackson: Paso a Paso ...

Permalink 10:13:15, Categories: Coach's Digest, Basketball, eBA Stats Group  


September 10, 2017; eBA Stats Status: For English See Below!

Para la Versión en Español: Ver a continuación!

"... Forced or unforced it's depend upon the situation: so every TO may be forced or unforced. It's depend upon the eBA answer too.... no? ..."

Read more at our eBA Forums

The Basketball Statistics Clinic ONLINE has completed its task and closes its doors permanently from the moment we achieve all our goals!.
This was a collaborative project between the eBA Stats Team and the last six Academic Years 359 graduates from the eBA Basketball Statistics Courses,

Reports of actions taken during the last succesful periods, were uploaded at the Basketball Statistics Clinic ONLINE ~ Site News (on the right hand column at the top).

Be Welcome at eBA sketball on Facebook and at our Google + Community Basketball for Everyone!

Best Regards

eBA Stats Group

Phil Jackson: Step by Step ... In this image presented by eBA Stats Group  Basketball Statistics Analysis

Septiembre 10, 2017; Estatus eBA Stats: Español a Continuación!
For the English version: See above!

"... Forzada o no forzada depende de la situación: por ello todo BP puede ser forzado o no forzado. Esto depende también de la respuesta de la eBA....
no? ..."


Lea más en nuestro Foros eBA

La Clínica EN-LINEA de Estadísticas del Baloncesto ha concluido sus tareas y cierra sus puertas en forma definitiva desde el momento en que hemos lograr todos nuestros objetivos !
Éste fue un proyecto colaborativo entre el Equipo eBA Stats y los 359 graduados de los Cursos de las Estadísticas del Baloncesto de los últimos seis Años Académicos!

Informes de lo actuado durante este exitoso proyecto, fueron publicados en la
Clínica EN-LINEA de Estadísticas del Baloncesto
~ Site News ( sobre la columna derecha, al tope ).

Sean Todos Bienvenidos en
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y en nuestra
Comunidad Google + Baloncesto para TODOS
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Saludos Cordiales

Grupo eBA Stats




09/02/17

Covering the EUROBASKET 2017 • Cubriendo el EUROBASKET 2017


EUROBASKET 2017


We are covering the EUROBASKET 2017 in our "EuroBasket 2017 COLLECTION": http://bit.ly/1mcO3FS

( Para la Versión en Español: Ver a Continuación! )


EUROBASKET 2017


Estamos cubriendo el EUROBASKET 2017 en nuestras "COLECCIÓN EuroBasket 2017": http://bit.ly/1mcO3FS




09/01/17

Basketball Beautiful Faces on SEPTEMBER 2017 Cover from the NBA 2017 !
With the 'GOLDEN STATE WARRIORS DANCERS TEAM 2017 !

September 2017 Cover ~ Basketball Beautiful Faces:
From the 'GOLDEN STATE WARRIORS DANCERS TEAM 2017 !

This is Cersten, one of the most beautiful of the NBA 'GOLDEN STATE WARRIORS DANCERS TEAM'!
In this photograph from GOLDEN STATE WARRIORS presented by #eBAStatsGroup #BasketballStatistics Analysis .


Photograph: GOLDEN STATE WARRIORS

This is Cersten, one of the most beautiful of the NBA 'GOLDEN STATE WARRIORS DANCERS TEAM'!

Our Basketball Beautiful Faces of SEPTEMBER 2017 Cover !
Opening our season with the latest NBA Champions Dance Team!
With Cersten, one of the most beautiful of the GOLDEN STATE WARRIORS dancers team!



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