judge if the data obeys binomial distribution.

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`x` |
data |

`m` |
the number of intervals you want to divide the data in, default value is 10 |

`a` |
significance level |

`n` |
the number of experiments |

`p0` |
the probability of success |

Given a set of observations from a certain distribution, this function is used to test whether the observations are from a distribution of binomial or not. Usually, to ensure the function works well, the sample size needs to be large enough, i.e. the result will be stable if the sample size is larger than 100. The function will work better if the number of intervals you choose to divide the data in is between 10 and 20. This number cannot excess the number of given oberservations.

if data possibly obeys binomial distribution, return a value named qchisq which represents the possibility. the larger qchisq is, the larger the possibility will be; else return -1.

please pay attention to the definition of parameters in our functions.

JunYao Chen, CuiYi He, BoXian Wei

ROBERT V. HOGG/ALLEN T. CRAIG (Fifth Edition) Introduction Mathematical Statistics.

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