bimodal distribution

Answer:

when a distribution has 2 modes

frequency distribution

Answer:

expresses how often a score occurs in a set of data

interval scale of measurement

Answer:

an interval scale is one in which equal differences in scores represent equal differences in amoiunt of the property measured, but with an arbitrary 0 point

multimodal distribution

Answer:

a distribution with three or more modes

negative correlation

Answer:

an inverse relationship; when high scores are associated with low scores

negatively skewed distribution

Answer:

a distribution in which more of the scores fall above the mean

nominal scale of measurement

Answer:

categorical data; assigning observations into various indepedent categories and then counting the frequency of occurrence within each of the categories, creates a nominal scale

normal (bell) curve

Answer:

most of the scores cluster around the mean; the farther above or below the mean a score appears, the less frequently it appears

ordinal scale of measurement

Answer:

rank order scale; scores indicate only relative amounts or rank order

positive correlation

Answer:

a direct relationship; variables are said to be positively correlated when a high score on one is accompanied by a high score on the other; or a low score on one is associated with a low score on another