Chapter 2: Frequency Distributions

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frequency distribution

always shows the categories that make up the scale and the frequency in each category

proportions

fraction of the total group that's associated w/each score

percentage

relative frequency out of 100

histogram

continuous data, no gaps b/w bars

block histogram

slight variation of a histogram

polygon

similar to histogram, uses dots and connects them

bar graph

discrete, categorical data

skewed distribution

scores pile up on one side and taper off in a tail on the other

what type of graph is the image?

histogram

what type of graph is this image?

block histogram

what type of graph is this image?

polygon histogram

what type of graph is this image?

bar graph