POLI 330 test 2 exam questions
and answers
What is measurement? - answer the process of assigning numbers
to objects, events, or situations in accord with some rule.
3 techniques of measurement - answer verbal reports
observation
archival report
4 types if measurement - answer nominal - numbers
ordinal - rank
interval - equal distance
ratio - absolute zero
discrete variable - answer a quantitative variable that has either a
finite number of possible values or a countable number of possible
values
- number of pages in a book
continuous variable - answer a quantitative variable that has an
infinite number of possible values that are not countable
- height and weight
4 types of validity - answer face, content, criterion, construct
face validity - answer extent to which respondents can tell what
the items are measuring
, content validity - answer the extent to which a test samples the
behavior that is of interest
criterion validity - answer the extent to which a measure is related
to an outcome
construct validity - answer the extent to which variables measure
what they are supposed to measure
concurrent validity - answer the extent to which two measures of
the same trait or ability agree
predictive validity - answer The success with which a test predicts
the behavior it is designed to predict; it is assessed by computing
the correlation between test scores and the criterion behavior.
random error - answer an error that occurs when the selected
sample is an imperfect representation of the overall population
systemic error - answer caused by incorrect calibration of the
measuring instrument
Why do we "sample"? - answer - sample full group not feasible
- better data if group is large
- carefully drawn sample increases validity and reliability
Population - answer c-content
u-unit
t-time
e-extent
and answers
What is measurement? - answer the process of assigning numbers
to objects, events, or situations in accord with some rule.
3 techniques of measurement - answer verbal reports
observation
archival report
4 types if measurement - answer nominal - numbers
ordinal - rank
interval - equal distance
ratio - absolute zero
discrete variable - answer a quantitative variable that has either a
finite number of possible values or a countable number of possible
values
- number of pages in a book
continuous variable - answer a quantitative variable that has an
infinite number of possible values that are not countable
- height and weight
4 types of validity - answer face, content, criterion, construct
face validity - answer extent to which respondents can tell what
the items are measuring
, content validity - answer the extent to which a test samples the
behavior that is of interest
criterion validity - answer the extent to which a measure is related
to an outcome
construct validity - answer the extent to which variables measure
what they are supposed to measure
concurrent validity - answer the extent to which two measures of
the same trait or ability agree
predictive validity - answer The success with which a test predicts
the behavior it is designed to predict; it is assessed by computing
the correlation between test scores and the criterion behavior.
random error - answer an error that occurs when the selected
sample is an imperfect representation of the overall population
systemic error - answer caused by incorrect calibration of the
measuring instrument
Why do we "sample"? - answer - sample full group not feasible
- better data if group is large
- carefully drawn sample increases validity and reliability
Population - answer c-content
u-unit
t-time
e-extent
