An Important Preanalytical Variable Is Associated with the Use or Non-Use

question 4

Multiple Choice

An important preanalytical variable is associated with the use or non-use of anticoagulants.Which of the following statements related to use or non-use of anticoagulants are correct?
1) The measured total protein level is the same in serum and heparinized plasma.
2) Platelets release potassium during clotting.
3) The use of EDTA plasma will falsely decrease plasma calcium.
4) Heparinized plasma is preferred over serum for cardiac marker evaluation.

• A)1, 2, 3, 4
• B)1, 2, 3
• C)2, 3, 4
• D)1, 3, 4

Distinguish between manipulated and nonmanipulated variables in experiments.

Describe the strengths and limitations of case study research methods in psychology.

Interpret the meaning and significance of correlation coefficients in research.

Assess the factors that might lead to false significance in statistical findings.

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Definitions:

Controllable Variance

A measure in accounting that represents the difference between actual costs and the budgeted amounts that management could control or influence.

Indirect Factory Wages

Wages paid to employees who are not directly involved in production but whose services are necessary for the manufacturing process.

Budgeted Amounts

Financial projections or estimates of revenue and expenses over a specified period, used for planning and control purposes.

Direct Labor Time Variance

The difference between the actual time taken to produce a good or service and the estimated time.