research methods ; correlations

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TYPES OF CORRELATION
dfgdfg
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what does correlation illustriate?
strength / direction of association
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between two?
co-variables
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correlations are plotted on?
scattergram
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TYPES OF CORRELATION
DFGDF
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so if we're measuring frequent use of caffeine and its correlation with high anxiety what are the co-variables?
caffeine intake / anxiety level
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what woudl a positive correlation be in this sense?
more caffeine higher anxiety
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if also had them record how many hours sleep what would we expect to find hypothesesy?
more caffeine less sleep
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why would this be a negative correlation?
one variable rises the other falls
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and if we also asked them to record number dogs on street what would we expect to find?
no relationship
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so what kind of correlation?
zero correlation
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DIFFERENCE BETWEEN CORRELATIONS / EXPERIMENTS
DDFF
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what happens in experiment?
researcher manipulates iv to record effect on dv
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as result of this deliberate change in one variable its possible to infer?
iv caused observed changes in dv
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in correlation no manipulation of one variableand tehrefore not possible to establish?
cause and effect
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people can be anxious for all kinds of reasons and therefore what cannot be disregarded?
thier influence on other co-variable
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what are these other variables called?
intervening variables
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STRENGTHS
KJKJ
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correlation useful what kind of research tool?
preliminary
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why?
provide precise and quantifiable measure of how two covariables related
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which may suggest?
ideas for possible future research if strongly related
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are correlations slow and spenny?
nop
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why?
no need for controlled env / no mainpulation
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what kind of data can be used making less time-consuming?
secondary data from others
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- limitations
dgdf
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can tell us how variables related but not?
why
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why?
bc lack experimental manip / ctrl
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may be case another untested variable is causing relationship which is known as?
third variable problem
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largely because of 3rd variable / unable tell why what can happen to correlations?
misused / misinterpreted
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ANALYSIS + INTERPRETATIONS
DFGDFG
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- correlation coefficients
dfgdfg
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what is the correlational coefficient?
stats tested correlation producing numerical value from +! - -1
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this value tells us which two thing about the relationship of the variables?
strength / direction
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Card 2

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what does correlation illustriate?

Back

strength / direction of association

Card 3

Front

between two?

Back

Preview of the front of card 3

Card 4

Front

correlations are plotted on?

Back

Preview of the front of card 4

Card 5

Front

TYPES OF CORRELATION

Back

Preview of the front of card 5
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