Desmond Thinks His New Tutoring Methods Are Highly Effective Compared

question 72

Multiple Choice

Desmond thinks his new tutoring methods are highly effective compared to commercially available methods.He selects the worst students in his statistics class and tries his new tutoring strategy.Which statement describes a threat to the validity of his hypothesis even if the students do very well after the tutoring sessions?

• A) Instrumentation errors will skew the results.
• B) Regression to the mean is likely to occur.
• C) Confirmation bias is likely to occur.
• D) The testing sequence is a confounding factor.

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Definitions:

Avoidable Costs

Costs that you get back if you shut down operations.

Variable Costs

Costs that vary directly with the level of production or sales volume, such as raw materials or labor expenses.

Fixed Costs

Business expenses that remain constant regardless of the level of production or sales activity, such as rent, salaries, and insurance.

Average Costs

The total cost of production divided by the number of goods produced, reflecting the average expense per unit.