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 ...

Julie Young is an experienced financial writer and editor. She specializes in financial analysis in capital planning and investment management. Sydney Saporito / Investopedia A frequency distribution ...

Tallying is a way of recording data that counts in groups of five. The data is tallied as it is counted, with a mark for each piece of data, and then the frequency is recorded at the end. Frequency ...

In accordance with general principles recommended by the International Committee for Standardization in Haematology (1982, Journal of Clinical Pathology 35, 1320-1322), we have developed statistical ...