This paper offers class mark estimators for the intervals of a grouped frequency distribution, derived by parabolic interpolation between any given interval and its adjacent intervals. The objective ...

The optimal interval between two consecutive mammograms is uncertain. The UK Frequency Trial did not show a significant difference in breast cancer mortality between screening every year (study group) ...

Characterization of the distribution of intervals between successive births affords both practical and theoretical advantages in the analysis of fertility data. Moreover, attempts to formulate a ...