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# Skewed Distribution: Definition, Examples - Statistics How To

A left-skewed distribution has a long left tail. Left-skewed distributions are also called negatively-skewed distributions. That's because there is a long tail in the negative direction on the number line. The mean is also to the left of the peak.

A right-skewed distribution has a long right tail. Right-skewed distributions are also called positive-skew distributions. That's because there is a...

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http://www.statisticshowto.com

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## June 2017 CFA Level 1: CFA Exam Preparation (study notes ...

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My Note:

If a distribution is symmetrical, each side of the distribution is a mirror image of the other. For a symmetrical, bell-shaped distribution (known as the normal distribution), the mean, median, and mode of the distribution are equal. The normal distribution can be completely described by its mean and variance.

A distribution is skewed if one of its tails is longer than the other...

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http://analystnotes.com

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## Normal Distributions, Standard Deviations, Modality ...

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Normal distributions, Modality, Skewness and Kurtosis: Understanding the concepts

The normal distribution is a theoretical concept of how large samples of ratio or interval level data will look once plotted. Since many variables tend to have approximately normal distributions it is one of the most important concepts in statistics. The normal curve...

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## CancerGuide: The Median Isn't the Message

The Median Isn't the Message

is the wisest, most humane thing ever written about cancer and statistics. It is the antidote both to those who say that, "the statistics don't matter," and to those who have the unfortunate habit of pronouncing death sentences on patients who face a difficult prognosis. Anyone who researches the medical literature will confront the statistics for their...

Date: 2008-01-16 03:25:25

Website:
http://cancerguide.org

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## Comparing groups for statistical differences: how to ...

Choosing the right statistical test. What do we need to know before we start the statistical analysis?

Question 4: What type(s) of data may we obtain during an experiment?

Answer 4: Basic data collected from an experiment could be either quantitative (numerical) data or qualitative (categorical) data, both of them having some subtypes (4).

The quantitative (numerical) data could be:

1. Discrete...

Date: 2017-04-03 09:23:46

Website:
http://www.biochemia-medica.com

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