Abstract
An analysis was performed on the published data for the nationally and internationally known entrants in the fourth and fifth Gosford Random Sample Laying Tests. Regression methods were used to fit various models and results indicate that 97 per cent of the variation in financial margin can be attributed to the variate total weight of eggs per bird housed. Alternatively, use of the variate hen‐housed egg production accounted for 91 per cent of the variation in Margin.

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