Statistical Tests for Frequency Distribution of Mean Gravity Anomalies
The hypothesis that a very large number of lOx 10mean gravity anomalies are normally distributed has been rejected at 5% Significance level based on the X2 and the unit normal deviate tests. However, the 50 equal area mean anomalies derived from the lOx 10data, have been found to be normally distributed at the same level of significance. It is concluded that lOx 10anomalies may not be treated as random variables without systematic errors, at a global and hemispherical extent; whereas 50equal area anomalies derived from them can be so treated.
Department of Surveying University of Nigeria, Enugu Campus