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Thus, the diameter frequency distributions of whole oocytes (FDWO) at each ovarian stage were graphically represented as a frequency histogram.
The main assumption for the parameter estimation is that the FDWO for each expected diameter can be analyzed with a normal distribution, assuming that each estimated mean represents a different oocyte substage.
The statistical procedure was similar to that used for analyzing the diameter FDWO, and consequently, the same structural equation of the normal PDF was used (Eq.