descriptive statistic for measuring dispersion

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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Question 5 (1 point)

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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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descriptive statistic for measuring dispersion