Document Type : Research Paper

Authors

• Hasan Ali Ghayur
• Farinush Kiarasi

Abstract

One of the problems encountered by researchers in natural science and related sciences is lack of homogeneity in precipitation statistics of pluviometry stations in a region or a basin. Thus, the precipitation statistics of one or more stations do not match those of other stations, and this implies that a favorable relationship between precipitation and elevation cannot be created and the level of correlation among relations is very low.
The reasons for this issue can be varied. In this paper, first it was attempted to specify the stations with conflicting statistics and then it was tried to justify the reasons causing these disagreements.
The SPSS Software, a statistical software package, can assist surveyors in this task because using this software and the T test it is possible to compare the statistics of precipitation of a station with the average precipitation of the region, and to determine the agreement or disagreement of precipitation data in this station with the whole of region. In addition, it is possible to compare statistical data of two stations and to examine their agreement.

Keywords

• parametric tests
• T Test
• inferential statistics
• descriptive statistics
• regression line
• significance level
• Correlation Coefficient
• null assumption
• alternative hypothesis