نتایج جستجو برای: series test
تعداد نتایج: 1133939 فیلتر نتایج به سال:
The classical D’Alembert’s Ratio Test is a powerful test that we learn from calculus to determine convergence for series of positive terms. Its range applicability and ease computation make this extremely appealing. However, when the limiting ratio terms equals 1, then inconclusive. Several tests like Raabe’s Gauss’ Tests have been proposed in order address case. These were also generalized by ...
Given a real random-like time series, the first question to answer is whether the data carry any information over time, i.e. whether the successive samples are correlated. Using standard statistical testing, the least interesting null hypothesis of white noise has to be rejected if the analysis of the time series should be of any use at all. Further, if nonlinear methods are to be used, e.g. a ...
thunderstorms are climatical phenomena, which sometimes can cause irreparable damage to the ecology. in this study to identify any trends in the frequency of days with thunderstorms in iran, long-term statistics of 33 synoptic stations, from the beginning until 2005 was used. at first by applying nonparametric man-kendall and senâs estimator methods on four seasonal time series, and one annua...
Underground water resources considered as a major source of fresh water. Increasing need to water in Iran, causing to immensely utilization and ground water balance disorder, so that state of ground water in many of area is negative.The purpose of this study is to investigate the trend of changes in some of the characteristics of groundwater during the period 1374 to 1387 is Segzi plain. For...
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