A specific value, such as “999,”
Subject: Business   / Management
Question
QUESTION 1
A specific value, such as “999,” is often used to identify a missing variable, rather than leaving the field blank. Ideally this would be defined…
In a codebook
Before data entry begins
By the IRB
both by the IRB and before data entry begins
both in a codebook and before data entry begins.
QUESTION 2
A FILL IN THE BLANKcan reduce data entry time and improve data quality, but can be more difficult to implement, especially when documentation of informed consent is required.
Interview
Paper survey
Electronic survey
Phone survey
QUESTION 3
A variable assigns a rank to responses, whereas a variable has no implicit ranking.
Ordinal, ratio
Ratio, categorical
Interval, binomial
Ordinal, categorical
Regression modeling can be used to test the extent to which a variable or variables predict a particular outcome.
True
False
.
QUESTION 7
Responsibilities of a study PI include which of the following? (Check all that apply)
Ensuring that funds are managed according to the budget.
Determine whether the protocol will protect the welfare and rights of subjects.
The study protocol is followed appropriately.
Any adverse events are reported.
QUESTION 8
Outcome variables for studies based on 2×2 tables (case control, cohort) must be…
Binomial
Categorical
Ratio
Coded
QUESTION 9
Increasing your sample size will have what effect on the confidence interval around your outcome?
The CI will become narrower
The CI will become wider
The CI will become taller
Sample size has no effect on CI
QUESTION 10
Any given study participant has an equal chance of being assigned to the intervention or control group is researchers are using…?
A non-random sampling strategy
A simple random sample
A cluster sample
A stratified random sample
QUESTION 11
The NIH data sharing policy requires researchers to submit data to NIH as it is collected.
True
False
QUESTION 12
Testing a questionnaire is important in order to ensure that wording is clear, that questions are asked in the best order, and to determine the amount of time taken to complete a response.
Agree
Neutral
Disagree
I don’t know
