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Flashcards in Chapter 3 Deck (5)
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1

Percentile

a point or position on a continuous scale of 100 theoretical divisions such that a certain fraction of the population of raw scores lies at or below that point.

2

Quartile

percentile scale is divided into four equal parts; The first extends from zero to the 25th percentile (Q1 to the 50th percentile (Q2). The second quartile ranges from Q1 to the 75th percentile). The third extends from Q2 (Q3). The fourth, or highest, reaches from Q3).

3

Decile

the scale is divided into 10 parts, each of which has a range of 10 points. The 1st decile ranges from 0 to D1, the second from D1 to D2, and so forth; the 10th decile extends from D9 (the 100th percentile)

4

Quintile

five divisions of the percentile scale are made

5

Standard Score

a score that is derived from
raw data and has a known basis for comparison. In percents, the center is 50% and the range is 0 to 100%