AP Psych Unit 0 Vocab 9

the most frequently occurring score(s) in a distribution.

• mean

• median

• mode

• standard deviation

the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.

• mean

• median

• mode

• standard deviation

the middle score in a distribution; half the scores are above it and half are below it.

• mean

• median

• mode

• percentile rank

the percentage of scores that are lower than a given score.

• range

• percentile rank

• distribution

• median

a representation of scores that lack symmetry around their average value.

• standard deviation

• range

• normal curve

• skewed distribution