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- Skills Directory
- Statistics

# Statistics

Basic

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

This key competency area deals with samples, outliers, statistical bias, and common distributions, among others.

Key Competencies:

**Samples**- Ability to obtain a sample mean.*Sampling*is a process used in*statistical*analysis in which a predetermined number of observations are taken from a larger group. A sample is refers to a smaller, manageable version of a larger group.**Outliers**- An understanding of an*outlier,*an observation that lies an abnormal distance from other values in a random sample.**Statistical bias**-**Common distributions -**The distribution of a statistical data set is a listing or function showing all the possible values (or intervals) of the data and how often they occur. An understanding of basic types of distribution such as Bernoulli Distribution, Uniform Distribution, Binomial Distribution, Normal Distribution, Poisson Distribution, and Exponential Distribution.**Central limit theorem -**Familiarity with applying the Central Limit Theorem (CLT), which is a statistical concept that states that the sample mean distribution of a random variable will assume a near-normal or normal distribution if the sample size is large enough.