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# Measures of variability with inferential statistics

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Explain why measures of variability are essential to inferential statistics.

##### Solution Summary

This posting begins by defining what inferential statistics are, and then explains what 2 of the most popular inferential statistics are.

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When looking at inferential stats, we are trying to see if we can make inferences (conclusions or analysis) on a set of data. We can't just eye ball the data, we need to actually sit down and compute statistics to make a statistically sound conclusion on the data. This is what distinguishes inferential stats from descriptive stats that just looks at the data from a superficial point of view.

What type of tests do we do for inferential stats? The two main are estimation and hypothesis testing.

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##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.