1.correlation design Flashcards
w
variable 1 and variable 2=
x and y
whats a true experiment- and is this related to correlation design
changes in iv are directly responsible for changes in DV
its not related
what does experimental do
manipulate iv
is correlation non experimental
yes
- not maipulate any variables and observes naturally
purpose of correlation
find relationship between pairs of variables and describe NATURally exist
is there an independent variable
no
two variables X and Y measured in correlation
pros and cons of non-experimental
externals variables-
high internal validity
strength assosiation between var
when changing in one var(x) accompanied by changes in other (y)
does have high external val
control is limited-extranous var
but high external val as generlises real world
is it ethical more
yes
is correlation naturalistic reaserch
yes
covarience in correlation
varience= data sets vary from mean
covarience= changes should be met similar if related
if one variable deviates from mean, expect other to
correlation formula
s2=E(X-X_)2/n-1
calc mean
subtract mean each data point
square each
ad up
divide