COM 200 UPDATED Questions and
CORRECT Answers
Other than raw numbers, the only numbers researchers can get from nominal variables are
percentages. - CORRECT ANSWER- true
If a measure has "face validity," it means the questions appear to measure what they're
supposed to measure. - CORRECT AN...
COM 200 UPDATED Questions and
CORRECT Answers
Other than raw numbers, the only numbers researchers can get from nominal variables are
percentages. - CORRECT ANSWER- ✔✔true
If a measure has "face validity," it means the questions appear to measure what they're
supposed to measure. - CORRECT ANSWER- ✔✔true
The secret to high intercoder or observer reliability is - CORRECT ANSWER- ✔✔clear
definitions and classifications of behaviors.
In test-retest, a test is given to a group of people and then repeated, with the same people, a
week or two later. - CORRECT ANSWER- ✔✔true
Interval measures assume an equal distance between points on a scale. - CORRECT
ANSWER- ✔✔true
Analyzing a sample is done to - CORRECT ANSWER- ✔✔Gain insight into a larger
population that the sample is presumed to represented
To be satisfied that X does cause Y, which of the following must be established? - CORRECT
ANSWER- ✔✔all of the above
The larger the standard deviation of a variable, the wider its range of scores on either side of
the mean. - CORRECT ANSWER- ✔✔true
We can reduce or eliminate the influence of potentially relevant variables in an experiment by
- CORRECT ANSWER- ✔✔Randomly assigning participants to each experimental group
, Which of the following sampling methods is a probability sampling method? - CORRECT
ANSWER- ✔✔Stratified random sampling
NOIR in research stands for Nominal, Ordinal, Interval, Ratio. - CORRECT ANSWER-
✔✔true
Correlation coefficients indicate the - CORRECT ANSWER- ✔✔Strength of the relationship
between two variables
"A course in communication ethics is essential to my career" Strongly agree, disagree, neutral
- CORRECT ANSWER- ✔✔Likert-type scale
Cross-sectional surveys capture information at one moment of time. - CORRECT ANSWER-
✔✔true
Inferential statistics are based on the assumption that the sample studied is randomly selected.
- CORRECT ANSWER- ✔✔true
Inferential statistics help with all of the following except - CORRECT ANSWER- ✔✔all of
the above
A significant correlation between two variables means that there is a causal relationship
between them. - CORRECT ANSWER- ✔✔false
Match the statistical test in the left hand column with the purpose in the right hand column. -
CORRECT ANSWER- ✔✔t-test
The extent to which sample data reflect the wider population from which the sample was
drawn can be estimated using which one of the following? - CORRECT ANSWER-
✔✔Inferential statistics
Which one of the following is not true of descriptive statistics? - CORRECT ANSWER-
✔✔Show population parameters
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