Performance coefficient (CP) is a unit of measurement to determine the performance of the volleyball skills.
However, PC had a problem, this unit of measurement does not determine the low performance, medium and high of the volleyball skills.
Which statistical model I can use to make this classification of the volleyball skills?
You might have to take a page from SABREmetrics and invent some metrics. There are several skill sets needed to be a good volleyball player. You need to ask what skills are most important and least important.
One way to look at this type of model is to create a regression model. You can look at mobility and "spike" speed for a defending player. Suppose you have just one player on a practice surface. You can have them stand in a certain spot and "shoot" volleyballs at different areas of the practice surface at different speeds. You can then look at speed of the ball, distance in the X-axis and Y-axis from the player. Your response variable can be, did the player hit the ball in a useful manner? (Yes/No)
This type of analysis can tell you if a player on the other team hits a ball with a certain speed and in a certain direction from the player, what are the chances they do something good with it. If that is one of your players, you can then work on that. If you look at tape of other teams, you can use that against the player and work on drills to hit hte ball in those "weak" areas.
It should be work out a method how to classify the volleyball players. For example it can be find the 10 most reliable factors what describes how to be a good player (one test - dynamic leg power etc.). Every factor has its exact test method. Every test best score is 10. So you have a 100 point "pointer" for the given player. So you can classify them.
Btw, does anyone know any good volleyball statistics internet site (world, continent, best countries in volleyball...)?
Andrew Ekstrom, Béres Sándor and Luca Ardigo,
The Performance Coefficient is a unit of measurement of the performance of the volleyball skills elaborate by Jim Coleman.
The classification of the volleyball skills are between 0 to 3 because the equation of the Performance Coefficeint calculates point, error and continuity.
The volleyball coaches that use the Performance Coefficeint film the match and practices match analysis with scout elaborate in Excel and use the Performance Coefficeint with unit of measurement.
Which statistical model (anova, Bland-Altman and others) I can use to make the classification of the Performance Coefficient – low, medium and hig?
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