A) $\frac { 9 n } { 9 n + 2 }$

question 22

Multiple Choice

$\text { Write an expression for the } n \text {th term of the sequence } \frac { 10 } { 11 } , \frac { 19 } { 20 } , \frac { 28 } { 29 } , \frac { 37 } { 38 } , \ldots$

• A) \(\frac { 9 n } { 9 n + 2 }\)
• B) \(\frac { 9 n } { 9 n + 1 }\)
• C) \(\frac { 9 n - 1 } { 9 n + 1 }\)
• D) \(\frac { 9 n + 1 } { 9 n + 2 }\)
• E) \(\frac { 9 n - 1 } { 9 n + 2 }\)

---

Definitions:

Concurrent Validity

The construct validity of a measure is assessed by examining whether groups of people differ on the measure in expected ways.

Face Validity

Refers to the extent to which a test appears to measure what it claims to measure, based on superficial judgment.

Convergent Validity

A type of validity that assesses whether measures that should be related, based on the study hypotheses, are actually related.

Discriminant Validity

The extent to which a test or measure differentiates between distinct groups or constructs, showing it is not correlating too highly with measures from different constructs.