A Cognitive Psychologist Decides to Study the Effects of Chess

question 630

Multiple Choice

A cognitive psychologist decides to study the effects of chess practice on math abilities in middle school students. All students are tested on a standard math test at the beginning of the study. Students are then randomly assigned to a chess group and a control group. Students in the chess group spend thirty minutes every school day learning chess strategy and playing chess. Students in the no-chess control group spend thirty minutes every school day watching educational television. At the end of three months, students take another standardized math test. The improvement or decline in their test score is computed and compared across the two groups. In this experiment, what is the DEPENDENT variable?

• A) the change in math test scores
• B) playing chess or watching educational television
• C) improvement in chess-playing ability
• D) the number of chess matches won

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Definitions:

Average Cost

refers to the total cost of production divided by the number of units produced, also known as unit cost.

Cost Of Goods Sold

Cost of goods sold (COGS) is the direct cost attributed to the production of the goods sold by a company, including material and labor costs, but excluding indirect expenses.

Ending Inventory

The value of goods available for sale at the end of an accounting period, calculated by adding new purchases to beginning inventory and subtracting cost of goods sold.

Perpetual Inventory Account

An accounting method that records inventory purchases and sales in real time, providing a continuously updated inventory balance.