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[1109.2825] Random Walk Picture of Basketball Scoring

Abstract: We present evidence, based on play-by-play data from all 6087 games from the 2006/07--2009/10 seasons of the National Basketball Association (NBA), that basketball scoring is well described by a weakly-biased continuous-time random walk. The time between successive scoring events follows an exponential distribution, with little memory between different scoring intervals.

Random Walk Model Basketball - Image Results

More Random Walk Model Basketball images

In basketball, physics predicts how big a lead your team ...

"Random walk" model reveals when a lead is safe. Physics isn’t all about discovering new subatomic particles and describing the fundamental forces that hold the universe together.

Journal of Quantitative Analysis in Sports

computational random-walk model that accounts for a variety of statistical properties of scoring in basketball games, such as the distribution of the score difference between game opponents, the fraction of game time that one team is in the lead, the number of lead changes in each game, and the season win/loss records of each team.

Notes on the random walk model - Duke University

For the random-walk-with-drift model, the k-step-ahead forecast from period n is: n+k n Y = Y + kdˆ ˆ where . dˆ is the estimated drift, i.e., the average increase from one period to the next. So, the long-term forecasts from the random-walk-with-drift model look like a trend line with slope . dˆ ,

Random Walk Model - Duke University

Random walk model. When faced with a time series that shows irregular growth, such as X2 analyzed earlier, the best strategy may not be to try to directly predict the level of the series at each period (i.e., the quantity Yt).

Statistical Analysis of Momentum in Basketball

do arise from random statistical fluctuations. Their study indicated that a simple random-walk model successfully captures many features of the observed scoring patterns in basketball, thus the apparent streaks or slumps seen during a game are simply a consequence of a series of random uncorrelated scoring events.

Random walk - Wikipedia

Lattice random walk. A popular random walk model is that of a random walk on a regular lattice, where at each step the location jumps to another site according to some probability distribution. In a simple random walk, the location can only jump to neighboring sites of the lattice, forming a lattice path.

Random Walk Theory - Definition, History, Implications of the ...

A “random walk” is a statistical phenomenon where a variable follows no discernible trend and moves seemingly at random. The random walk theory, as applied to trading, most clearly laid out by Burton Malkiel, an economics professor at Princeton University, posits that the price of securities moves randomly (hence the name of the theory) and ...

20 Random Walks - MIT OpenCourseWare

20 Random Walks Random Walks are used to model situations in which an object moves in a sequence of steps in randomly chosen directions. Many phenomena can be modeled as a random walk and we will see several examples in this chapter. Among other things, we’ll see why it is rare that you leave the casino with more money than you entered