Descriptive
stats
: used to summarize and make understandable a group of numbers from
a research study.
Inferential
stats
: used to draw conclusions and make inferences based on the numbers
from a research study, but that go further than the numbers.
Numeric
variables
: the scores are numbers that tell you how much there is of what is
being measured.
Ex. 110 how stressed are you.
Equal

interval
variables
: variables in which the numbers stand for about equal
amounts of what is being measured.
Ex
.
GPA
Ratio

scale
: EI variables are on a ratio scale if it has an absolute zero
point.
EI variables can also be discrete or continuous.
Discrete
variables
can only have specific values.
No intermediate values
allowed.
Continuous
variables
can have an infinite number of values. Time,
height, weight are an ex.
Rank
order
(ordinal) variables are variables in which the numbers stand only for relative
ranking.
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 Spring '08
 Tolbert
 Frequency distribution, Kurtosis, numeric variables, EI variables, ms Ethics and Review

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