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# Discovering Statistics

Statistics

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## Quiz 13 : Analysis of Covariance

A covariate is?
Free
Multiple Choice

C

How many simple assumptions of ANCOVA exist?
Free
Multiple Choice

D

ANCOVA can be used?
Free
Multiple Choice

A

Convenience sampling sometimes causes undercoverage bias.
True False
If observations are not randomly sampled and independent of one another,what happens in ANCOVA?
Multiple Choice
A research fellow is conducting an experiment to test a hypothesis.Doubling the sample size will increase the power of the hypothesis test.
True False
Increasing survey size does not affect survey bias.
True False
Convenience sampling protects against undercoverage bias.
True False
Which of the following is true?
Multiple Choice
Analysis of covariance can be used to adjust for pre-existing differences in intact groups.
True False
In hypothesis testing,the p-value is greater than the significance level.
True False
In experimentally designed research,each experimental factor has one treatment level.
True False
Doubling the sample size will increase the effect size of the hypothesis test.
True False
Doubling the sample size will increase the probability of making a Type II error.
True False
Postal surveys are susceptible to non-response bias.
True False
It is not possible to use ANCOVA to increase statistical power,only decrease it.
True False