# research methods ; data analysis ; descriptive stats

MEASURES OF CENTRAL TENDENCY
DGD
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what are these?
averages that giv info about most typical values in set data
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three to consider?
mean / median / mode
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- mean
dfgdf
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or the?
avg
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why most sensitive?
requires all scores in calculation
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which means its more representative of?
data as a whole
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but easily distorted by?
extreme values
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- median
dfdg
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what is it?
middle value when arranged highest to lowest
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is it affected by extreme scores?
no
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why less sensitive than mean?
not all scores included in final calculation
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- mode
ddgfd
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what is it?
most frequently occuring score
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in some sets there may be two modes?
bi-modal
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or no mode if?
all scores different
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is it representative of data a a whole?
no
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for some data like what mode is only method u can use?
category data
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MEASURES OF DISPERSION
DGDFG
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based on what baout scores?
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and we focus on two of these being?
range / standard deviation
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- range
dfgd
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calculation of?
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and worked out by?
taking lowest from highest and adding one
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allows for fact raw scores often rounded up / down when recorded
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margin of error
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adv is that its easy to?
calculate
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but only takes into account?
two most extreme values
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and this may be?
unrepresentative of data set as whole
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doesn't give fair representation of?
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- standard deviation
dfgdg
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single value that tells what/
how far scores deviate from mean
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the larget the standard deviation the?
greater the dispersion
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w/ conditions of experiment large SD sugests?
not all pps affected same way
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why is it more precise measure of dispersion?
includes all values w/in final calculation
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but like the mean?
cna be distorted by single value
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## Other cards in this set

### Card 2

what are these?

#### Back

averages that giv info about most typical values in set data

### Card 3

#### Front

three to consider?

- mean

or the?