A School Compared the Grades of Students with Disabilities While

question 6

Multiple Choice

A school compared the grades of students with disabilities while they were in separate classrooms and a year later when the state required integrating these students into mainstream classrooms .What type of research is this?

• A)Cross-sectional comparison
• B)Before-after study
• C)Interrupted time series study
• D)Difference in differences study

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Definitions:

Operating Expense

Costs associated with the day-to-day operations of a business, excluding the cost of goods sold.

Sales

The total amount of revenue generated by the selling of goods or services.

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A document issued by a seller to a buyer that lists products or services provided and states the sum due for these.