A Sample of Students Is Enrolled in a Speed-Reading Class

question 11

Multiple Choice

A sample of students is enrolled in a speed-reading class. Each takes a reading test before and after the class. The two samples of scores are compared to determine how large an improvement in Reading speed occurred. Are these samples independent or paired?

• A) Independent
• B) Paired

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Definitions:

Entire Table

Refers to selecting or affecting all records or data within a table in database operations or queries.

Self Join

A type of SQL join where a table is joined to itself to compare rows within the same table.

Parent Table

In a relational database, a table that is referenced by a foreign key in another table (the child table), establishing a relationship between the two.

Allow Zero Length

A database field property that permits the entry of an empty string as a valid value.