Longview Hospital Performs Blood Tests in Its Laboratory

question 164

Multiple Choice

Longview Hospital performs blood tests in its laboratory. The following standards have been set for each blood test performed: During May, the laboratory performed 1,500 blood tests. On May 1 there were no direct materials (plates) on hand; after a plate is used for a blood test it is discarded. Variable overhead is assigned to blood tests on the basis of standard direct labor-hours. The following events occurred during May: • 3,600 plates were purchased for $9,540
• 3,200 plates were used for blood tests
• 340 actual direct labor-hours were worked at a cost of $5,550
The direct materials purchases variance is computed when the materials are purchased.
The labor rate variance for May is:

• A)$225 F
• B)$225 U
• C)$450 F
• D)$450 U

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Definitions:

Coefficient of Determination

A statistical measure, often denoted as R², that represents the proportion of the variance in the dependent variable that is predictable from the independent variable(s).

Coefficient of Correlation

A numerical metric that determines the intensity and course of a straight-line association between two variables that can be quantified.

Sample Coefficient

A measure that quantifies some kind of property or behavior, such as variability or correlation, from a sample of a population.

Correlation

Correlation refers to a statistical measure that indicates the extent to which two or more variables fluctuate together. A positive correlation indicates that as one variable increases, the other does too.