Assignment: measuring dependent variables

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Assignment: measuring dependent variables

Assignment: measuring dependent variables

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Assignment: Properties about a set of measurements of a dependent variable

The two properties about a set of measurements of a dependent variable that we are most interested in describing are:

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Question 2 (1 point)

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The ________________ is the sum of all the scores divided by the number of scores.

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Question 3 (1 point)

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The generally preferred measure of central tendency is usually the

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Question 4 (1 point)

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Which of the following is the most useful descriptive statistic for measuring dispersion?

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The standard deviation is

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Question 6 (1 point)

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If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then an I.Q. of 130 will have a z score (or standard score) of

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Question 7 (1 point)

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Inferential statistics allow you to decide whether a difference between the experimental and the control group is due to _______________ or ________________.

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Question 8 (1 point)

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The null hypothesis suggests that the two samples come from ___________ distribution(s), and the experimental hypothesis suggests that the two samples come from _____________ distribution(s).

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Question 9 (1 point)

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The power of a statistical test refers to its ability to

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Question 10 (1 point)

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Simple analysis of variance is used in designs having

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Question 11 (1 point)

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The number of participants in a study is denoted by

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Question 12 (1 point)

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A _____________ is a complete set of measurements.

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Question 13 (1 point)

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_____________ is one way of ensuring that a sample is representative of the population.

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Question 14 (1 point)

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If we conduct an experiment on average young, white, college males, inferential statistics allow us to generalize to the population of

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Question 15 (1 point)

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If we apply an alpha level of .05, and there really is no effect of the experimental manipulation, then one should make
a Type I error

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Question 16 (1 point)

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Which of the following would be considered the most conservative alpha level?

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Question 17 (1 point)

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The prediction that alcohol slows reaction time is

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Question 18 (1 point)

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Two-tailed tests are _______________ conservative and ______________ powerful than one-tailed tests.

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Question 19 (1 point)

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The _____________ indicates the number of scores that are free to vary.

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Question 20 (1 point)

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The ____________ is used to analyze the results when there are more than two groups.

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Question 21 (1 point)

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The __________ maintains that two conditions do not differ.

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Question 22 (1 point)

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A conservative statistical test is one that

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Question 23 (1 point)

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What are inferential statistics used for?

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Question 24 (1 point)

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Descriptive statistics are used to:

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Question 25 (1 point)

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Which of the following is not a characteristic of the normal curve:

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