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CMN 12Y MIDTERM 2025 BRAND NEW
ACTUAL EXAM WITH ANSWERS.
1. What are inferential statistics? - correct answer-use info from a
sample to make predictions about a population
2. Chi Squared? - correct answer-a statistic that quantifies the
difference between the observed and expected pattern.
3. p-value? - correct answer-the chance of finding that X^2 from
our samplee.
4. Bigger X^2 means? - correct answer-smaller p-value
5. What does the p-value have to be at for the group difference to
be unlikely due to chance? - correct answer-usually p<0.05
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6. If the p is less than or equal to 0.05, then...? - correct answer--
there is likely a real association between the variable sin the
population
- if we used a different random sample, we would expect
to find the same pattern (it is reliable)
7. What is external validity? - correct answer-- the data accurately
reflects the larger population.
- the degree to which the investigator can extend or
generalize a study's results to other subjects and
situations.
8. Will random samples have a weak or strong external validity? -
correct answer-strong external validity
9. What do main effects entail? - correct answer-1 outcome, 1
predictor, associated (outcomes is different by levels of
predictor), independent (outcome is same by levels of
predictor)
CMN 12Y MIDTERM 2025 BRAND NEW
ACTUAL EXAM WITH ANSWERS.
1. What are inferential statistics? - correct answer-use info from a
sample to make predictions about a population
2. Chi Squared? - correct answer-a statistic that quantifies the
difference between the observed and expected pattern.
3. p-value? - correct answer-the chance of finding that X^2 from
our samplee.
4. Bigger X^2 means? - correct answer-smaller p-value
5. What does the p-value have to be at for the group difference to
be unlikely due to chance? - correct answer-usually p<0.05
, Page | 2
6. If the p is less than or equal to 0.05, then...? - correct answer--
there is likely a real association between the variable sin the
population
- if we used a different random sample, we would expect
to find the same pattern (it is reliable)
7. What is external validity? - correct answer-- the data accurately
reflects the larger population.
- the degree to which the investigator can extend or
generalize a study's results to other subjects and
situations.
8. Will random samples have a weak or strong external validity? -
correct answer-strong external validity
9. What do main effects entail? - correct answer-1 outcome, 1
predictor, associated (outcomes is different by levels of
predictor), independent (outcome is same by levels of
predictor)
