#### Week #24 – Cohort study

A cohort study is a longitudinal study that identifies a group of subjects sharing some attributes (a "cohort") then

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#### Week #23 – Coefficient of variation

The coefficient of variation is the standard deviation of a data set, divided by the mean of the same data set.

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#### Week #22 – Coefficient of Determination

In regression analysis, the coefficient of determination is a measure of goodness-of-fit (i.e. how well or tightly the data fit the estimated model).  The coefficient is

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#### Week #21 – Consistent Estimator

An estimator is a measure or metric intended to be calculated from a sample drawn from a larger population...

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#### Week #20 – Collinearity

In regression analysis , collinearity of two variables means that strong correlation exists between them, making it difficult or impossible to estimate their individual regression coefficients reliably.

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#### Week #19 – Cohort study

A cohort study is a longitudinal study that identifies a population or large group (a "cohort") then draws a sample from the population at various points in time and records data for the sample.

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#### Week #18 – Centroid

The centroid is a measure of center in multi-dimensional space.

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#### Week #17 – Bootstrapping

Bootstrapping is sampling with replacement from observed data to estimate the variability in a statistic of interest. See also permutation tests, a related form of resampling. A common application

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#### Week #16 – Binomial Distribution

A Binomial distribution is used to describe an experiment, event, or process for which the probability of success is the same for each trial and each trial has only two possible outcomes.

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#### Week #15 – Uplift or Persuasion Modeling

A combination of treatment comparisons (e.g. send a sales solicitation, or send nothing) and predictive modeling to determine which cases or subjects respond (e.g. purchase or not) to which treatments.

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