Determination of Certain Parameters in Hydrology Through Statistics

Abstract

Statistics uses predetermined methods for collecting and analyzing data, mainly based on probability theory. In hydrology they are used for the analysis of various hydrological and meteorological data for some past period, as well as for making decisions and conclusions about the regime in future. The approach to statistical data processing does not have a single form in hydrology. The choice of the method depends on the accuracy or the level of confidence that this data should be analyzed i.e. interprets the course of an occurrence, or the conclusion we want to deduce for this phenomenon combined with other hydrological phenomena. Because hydrological data are mostly limited data, statistics is the main discipline that allows obtaining complete data from the data and draws a conclusion concerning the characteristics of hydrological phenomena. The purpose of applying statistics to the hydrological variables that have been registered in the past is to determine the probability with which these variables would appear in the future. In this paper, using old and new statistical methods, the unknown values of the annual average temperatures for five cities Skopje, Stip, D.Kapija, Prilep and Bitola in the period from 1925 to 2000 are determined. The obtained values lead us to some conclusions about their adaptability and confidentiality.