A Comparison between some Statistical Analyses in a Study of the Power of pH and the Concentration of CO2 in Tigris River Through Mosul City

Al-Sanjary (2001) mentioned the values of mean and standard deviation of the power of hydrogen (pH) and concentration of carbon dioxide (CO2) in the water of Tigris river in Mosul city, the study was applied over five locations during ten months. This information were used to simulate thirty values of each location during each month. The simulated data were used to compare some statistical analyses which are: analysis of variance followed by Student Newman Keules Test to compare between the means, factor analysis with axes rotation and the simple correlation coefficient. The results are presented in figures and charts to simplify the visual comparisons. The statistical analyses approach to the same conclusions. It was concluded that the power of pH and the concentration of CO2 were highly effective in the region of Danadan, also the two variables were increasing in September. However the regions affected the two variables more than that months did.