Why Does Random Assignment Help Control for Confounding Variables

question 134

Multiple Choice

Why does random assignment help control for confounding variables?

• A) Random assignment ensures that participants in a study are properly motivated to perform the experimental task that will be required of them.
• B) Random assignment eliminates individual differences by removing individuals with the same characteristics from the study and only using individuals who have different characteristics.
• C) By randomly assigning people to groups, individual differences that may influence the dependent variable are randomly distributed throughout the conditions, rather than being systematically related to the independent variable.
• D) By randomly assigning people to groups, all individuals with similar characteristics are grouped together in the same condition.

Calculate expected times and variances using probabilistic approaches, specifically PERT analysis.

Understand the concept and application of PERT (Program Evaluation and Review Technique) and CPM (Critical Path Method) in project management.

Calculate the estimated time and variance for projects using PERT analysis.

Understand the concept of the critical path in project management, including how to identify and analyze it.

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Definitions:

Conversion Cost

The sum of direct labor and overhead costs associated with transforming raw materials into finished goods.

Cooking Department

A segment within a manufacturing or culinary operation where raw materials are prepared, cooked, or processed.

First-In, First-Out Method

An inventory valuation method where the first items placed in inventory are the first ones sold, typically used to manage costs and stock.

Cost Reconciliation Report

A report detailing the reconciliation of budgeted, standard, or estimated costs with actual costs incurred.