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Next Educational theory testing MCQ

Skinner trained plyny to perform a behavior chain. plyny was a ______.

Rat

Pigeon

Dog

Philosophy student

Answer

Correct Answer: Rat

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In logistic regression, what is the R-statistic?

It is the partial correlation between the outcome variable and each of the predictor variables.

It is the semi-partial correlation between the outcome variable and each of the predictor variables.

It is the polychoric correlation between the outcome variable and each of the predictor variables.

It is the correlation between the outcome variable and each of the predictor variables.

Answer

Correct Answer: It is the partial correlation between the outcome variable and each of the predictor variables.

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Imagine you conducted a study to look at the association between whether an expectant mother eats breakfast (or not) and the gender of her baby. Cramér’s V = .22. How would you interpret this value?

There is a medium to large association between the gender of the baby and whether or not the mother ate breakfast every day.

There was a small to medium association between baby gender and whether the mother ate breakfast every day.

22% of the variation in frequency counts of baby gender (boy or girl) can be explained by whether or not the mother ate breakfast every day.

2.2% of the variation in frequency counts of baby gender (boy or girl) can be explained by whether or not the mother ate breakfast every day.

Answer

Correct Answer: There was a small to medium association between baby gender and whether the mother ate breakfast every day.

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Which of the following statements about statistical power are true. The power of a statistical test depends on:

How big the effect actually is.

How strict we are about deciding that an effect is significant.

The sample size.

Whether the test is a one- or two-tailed test.

Answer

Correct Answer: How big the effect actually is.
How strict we are about deciding that an effect is significant.
The sample size.
Whether the test is a one- or two-tailed test.

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Which of the following statements about statistical power are false.

Power is the ability of a test to detect an effect given that an effect of a certain size exists in a population.

We can use power to determine how large a sample is required to detect an effect of a certain size.

Power is linked to the probability of making a Type II error.

The power of a test is the probability that a given test is reliable and valid.

Answer

Correct Answer: The power of a test is the probability that a given test is reliable and valid.

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