Turning point test
In statistical hypothesis testing, a turning point test is a statistical test of the independence of a series of random variables.[1][2]
Statement of test
The turning point tests the null hypothesis[1]
- H0: X1, X2, ... Xn are independent and identically distributed random variables
against
- H1: X1, X2, ... Xn are not iid.
Test statistic
We say i is a turning point if the vector X1, X2, ..., Xi, ..., Xn is not monotonic at index i.
Let T be the number of turning points then for large n, T is approximately normally distributed with mean (2n − 4)/3 and variance (16n − 29)/90. Therefore the p-value is[3]
References
- ^ a b Le Boudec, Jean-Yves (2010). Performance Evaluation Of Computer And Communication Systems (PDF). EPFL Press. pp. 136–137. ISBN 978-2-940222-40-7.
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