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Statistics MCQ

When an experimenter incorrectly rejects the null hypothesis when it is true it is called Type II error.

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When an experimenter incorrectly rejects the null hypothesis when it is true it is called type I error.

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Trend is frequently reported when the data_____

Correct Answer: Comes close to the level of statistical significance

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Findings are considered statistically significant if the probability that we are wrong is _____

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In signal to noise ratio the effect of a treatment is considered the signal and _____ is considered the noise.

Correct Answer: Random variation in numbers

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Most frequently what the experimenter thinks may be true or wishes to be true before he or she begins an experiment refers to_____

Correct Answer: Both a and b

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The significance level in replication is _____

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The science of predicting future events or the likelihood of any given event occurring is known as_____

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P level is the probability of committing the Type I error, that is, rejecting H0 when H0 is _____

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Null hypothesis significance testing is a statistical method for testing whether or not _____ variable has an effect on the dependent variable.

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All are correct about null hypothesis except_____

Correct Answer: Assumed to be true before the start of experiment

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Findings are considered statistically nonsignificant or not significant if the probability of being wrong is_____

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In nondirectional hypothesis the _____ hypothesis will be rejected if two groupsâ€™ means differ in either direction.

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Insignificant is often erroneously used instead of the correct statistical term not significant or nonsignificant.

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Directional alternative hypothesis is also called as_____

Correct Answer: One-tailed test of significance

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Demand characteristics are _____ hints and cues that guide participants to act in accordance with the experimenterâ€™s wishes or expectations.

Correct Answer: Both a and b

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In a controlled experiment , the parameter of statistical interest is the difference between the two groupsâ€™ means on some _____ variable as a function of the independent variable.

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Beta refers to the probability of_____

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