### Nationally Recognized Statistical Ratings Organization (NRSRO)

Nationally Recognized Statistical Ratings Organization (NRSRO) What is 'Nationally Recognized Statistical Ratings Organization - NRSRO' The formal term to describe credit rating agencies t

### Mean Reversion

Mean Reversion What is the Mean Reversion? Mean reversion is a theory according to which the prices return back to the mean. This mean can be the usual average of the price or any other aver

### Random Factor Analysis

Random Factor Analysis What is 'Random Factor Analysis' A statistical analysis performed to determine the origin of random data figures collected. Random factor analysis is used to deciphe

### Sampling Error

DefinitionIn statistics, sampling error is incurred when the statistical characteristics of a population are estimated from a subset, or sample, of that population. Since the sample does not

### Sampling

Sampling What is 'Sampling' Sampling is a process used in statistical analysis in which a predetermined number of observations are taken from a larger population. The methodology used to s

### Sample Selection Bias

DefinitionIn statistics, sampling bias is a bias in which a sample is collected in such a way that some members of the intended population are less likely to be included than others. It resu

### Sampling Distribution

DefinitionIn statistics, a sampling distribution or finite-sample distribution is the probability distribution of a given random-sample-based statistic. If an arbitrarily large number of sam

### Standard Deviation

Standard Deviation In mathematics, standard deviation is the degree of the dispersion from a set of data’s mean. The SD is higher when the data is more stretched. In other terms, the squar

### Quartile

DefinitionA quartile is a type of quantile. The first quartile is defined as the middle number between the smallest number and the median of the data set. The second quartile is the median o

### Qualitative Analysis

Qualitative Analysis What is 'Qualitative Analysis' Qualitative analysis is a securities analysis that uses subjective judgment based on unquantifiable information, such as management expe
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