Week 7 Flashcards
central tendency
mean - average
median - middle value
normal distribution
symmetrical around the mean
skewed distribution
asymmetrical around the mean
kotosis
how pointy/flat a distribution is
postive distribution
skewed to the left
negative distribution
skewed to the right
dispersion
how spread the data is
central distribution
interquartile range - removes outliers 25-75%
standard deviation - variation in values
what does knowing how dispersed data is help us interpret?
size differences between groups
used when planning research
standard formatting rules
mean - M standard deviation - SD
mediam - MDN interquartile range - IQR
descriptive stats don’t allow for inferences
shouldn’t discuss differences
variable
something that alter and changes can be measured
independent variable
variable that is manipulated
dependent variable
variable that changes as a result of changes to the IV
extraneous variable
any other variable that will effect the DV other than the IV
cofound variables
a specific type of EV, acts alongside the IV to alter the DV
natural experiment
behaviour observed in a natural setting
controlled experiment
behaviour observed under controlled lab setting
participant observation
researcher has direct contact with the group being observed
non-participant observation
researcher has no direct contact “fly on the wall”
field experiment
conducted in everyday life but the enviromentt and participants are artificially set up
strengths of observations
high ecological validity
good for forming theories or hypothesis
weaknesses of observations
low accuracy of behaviours
experimental bias
confirmation bias
less control of variables
