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13 Cards in this Set

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data in a sequence in which they are collected before they are processed or ranked (ungrouped data)
raw data
midpoint of the upper limitations of one class and the lower limit of the next class
class boundaries
upper boundary - lower boundary
class width
lower limit + upper limit / 2
class midpoint
f/Ef
percentage = rel. frequency *100
Relative Frequency and Percentage Distributions
classes are marked on horizontal axis and either frequencies, relative frequencies, or percentages are marked on vertical axis
histogram
graph formed by joining the midpoints of the tops of successive bars in a histogram
polygon
cumulative frequency/ total observation in data set
cumulative relative frequency
curve for frequency distribution - joined by straight lines
ogive
for qualitative data - each value is identified in two portions
stem and leaf display
average - sum of all values/number of values
mean
value of middle term in a ranked data set
median
value that occurs at the highest frequency
mode