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Psyc 255 exam 2 questions fully solved &updated.
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Psyc 255 exam 2 questions fully solved &updated.
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Psyc 255 exam 2questions fully solved
&updated
What is psychology? - answer the scientific study of behavior and
mental processes
what is statistics? - answer the science of collecting, organizing,
analyzing, and interpreting data
why do we use statistics? - answer to describe data and take
chance into account
Goals of Psychology - answer describe, explain, predict, control
What makes a science a science? - answer transparent, testable,
rigorous, reproduceable
independent variable (IV) - answer the factor the researcher
manipulates in a controlled experiment (the cause)
dependent variable (DV) - answer the research variable that is
influenced by the independent variable (effect)
what scale of measurement is the independent variable? - answer
nominal
, What is operational definition? - answer a specific way of
measuring a variable
observer bias - answer tendency of influencing participants,
observer's presence
experimenter bias - answer more effect from the observer,
expectations, positive influence
demand characteristics - answer when participants act differently
simply because they know that they are in an experiment
scales of measurement: - answer nominal
ordinal
interval
ratio
what is a level - answer an option or category
extraneous variable - answer Something unwanted or unexpected
that might affect the dependent variable.
confound variable - answer extraneous variable that not only
affects the dependent variable, but is also related to the
independent variable.
which is worse, confound or extraneous? - answer confound
What can tell us what a typical score looks like? - answer measures
of central tendency - mean,median,mode
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