# Shared Flashcard Set

## Details

Terms For Stats Chap 2.
Stats Vocab Chap 2
9
Social Studies
09/27/2012

Term
 Frequency Distribution
Definition
 an organized tabulation of the number of individuals located in each category on the scale of measurement. (p. 37)
Term
 Relative Frequencies
Definition
 graph that shows relative amount (kind of an estimate) not an exact figure (Example: bluegill vs bass pg 48)
Term
 Smooth Curve
Definition
 when scores come from a ratio or interval scale. Its essentially the bell curve and are showing the relative changes that occur form one score to the next. (p. 48) Ex: IQ scores
Term
 variability
Definition
 Tells whether the score are spread over a wide range or are clustered together(p. 50).
Term
 Symmetrical distribution
Definition
 possible to draw a vertical line through the middle so that one side of the distribution is a mirror image of the other. (p 50)
Term
 Skewed distribution
Definition
 scores tend to pile up towards one end of the scale and taper off gradually at the other end. A positive skew is where the tail pints towards the positive end of the x-axis and vice versa for negative (Pp. 50-51)
Term
 tail
Definition
 where the score taper off of a distribution (p. 50)
Term
 rank or percentile rank
Definition
 of a particular score is defined as the percentage of individuals in the distribution with scores at or below the particular level. (p 52)
Term
 percentile
Definition
 unlike rank, it is the score. This score is identified by its percentile rank. (p. 52)
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