Percentage of variation in Y explained by X is measured by

coefficient of residual
coefficient of prediction
coefficient of determination
coefficient of index
✅ The correct answer is C.
Percentage of variation in Y explained by X is measured by coefficient of determination. The coefficient of determination (denoted by R2) is a key output of regression analysis. It is interpreted as the proportion of the variance in the dependent variable that is predictable from the independent variable.

Sum of beginning work in process inventory units and started units, is subtracted from sum of ending work in process inventory units and transferred out units of goods to calculate

Gross weighted spoilage
inventoriable spoilage
partial spoilage
total spoilage
✅ The correct answer is D.
Sum of beginning work in process inventory units and started units, is subtracted from sum of ending work in process inventory units and transferred out units of goods to calculate total spoilage.

Scrap is ________.

residue of material
wastage of material
surplus material
abnormal loss of material
✅ The correct answer is A.
Scrap is residue of material. It is incidental residue from the materials used in manufacturing operations which is recoverable and measurable without processing.