A Researcher Is Interested in the Effect of Teacher-Student Ratios

question 32

Multiple Choice

A researcher is interested in the effect of teacher-student ratios. She finds 10 fifth-grade classrooms with 30-40 students per class and 10 others with 15-25 students per class. She discovers that there is a negative correlation between class size and student achievement. Which one of the following conclusions can we draw from this study?

• A)Although class size doesn't necessarily cause changes in achievement,class size can help us predict school achievement.
• B)Classes should be as large as reasonably possible.
• C)Classes should be as small as reasonably possible.
• D)The researcher has conducted a descriptive study.

Identify the signs and symptoms of local inflammation.

Understand the roles and functions of adaptive immunity cells.

Describe positive and negative selection processes in lymphocyte development.

Distinguish between different types of immunity (passive/active, natural/artificial).

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Definitions:

Press Button

The act of pressing a button to activate or operate a device or machine.

Payoff

Payoff refers to the gain or loss a participant receives as a result of an investment decision or a game strategy.

Mixed Strategy Equilibrium

A Nash equilibrium where at least one player in a game adopts a probabilistic approach to choosing among two or more strategies.

Company Policy

Guidelines and rules that dictate how various situations should be handled within a business context, directing the operations and decisions of a company.