Exam 9: Making Sense of the Numbers

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What is the median in the following set of numbers: 1,16,35,14,7

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C

This measure is the most comprehensive measure of variability,giving an "average" difference between all scores and the mean.It is called what?

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B

A researcher gathering his/her own data needs to convert raw data into a computer-friendly format or engage in data coding.

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The spread around the center of a distribution can be measured three ways.The ______ gives the highest and lowest ends of a set of numbers.

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A type II error

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A measure of spread around the center of distribution that gives the researcher the score at a specific place within the distribution is called a(n)______.

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If a researcher demands a very high standard of significance,he may make a mistake,saying there is no relationship in the population when in reality one exists.

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What three aspects of a bivariate relationship are revealed in a scattergram?

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Statistical significance indicates

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What is the purpose of multiple regression analysis? What two things does it tell a researcher?

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____ is one of the most widely used statistical techniques for nonexperimental data analysis in professional research reports.

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Variation can be measured in three ways: range,percentile,and

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Covariation and statistical independence are the same concept.

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What does a .01 level of significance mean?

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What are three measures of central tendency?

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Discuss measurements used in distribution around the center of a curve: range,percentile,standard deviation,and Z-score.

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Many naturally occurring phenomena fit the ______ curve when data points are plotted.

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Multiple Regression Analysis results tell the researcher two things,the percentage of prediction accuracy and the

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Bivariate relationships vary in their degree of ______.A very precise relationship occurs when all the cases fit right along the line that indicates the relationship and direction.The amount of spread among the points on the graph indicates ______(same as above).

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Mr.Marsh discovers that the measure of association is zero in his data relationship.What does this mean?

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