# Definitions for developers starting with letter C

**chi-square test**definition What is beginning with a “k”) is a Greek letter, and chi-square is “a statistical method used to test whether the classification of data can be**classification**definition What is more categories an item falls under; a classic machine learning task. Deciding whether an email message is spam or not classifies it among**clustering**definition What is up data instances into groups—not a predetermined set of groups, which would make this classification, but groups identified by the**coefficient**definition What is as a multiplier to a variable or unknown quantity (Ex.: x in x(y + z), 6 in 6ab”[websters] When graphing an equation such as y = 3x + 4**computational linguistics**definition What is A branch of computer science for parsing text of spoken languages (for example, English or Mandarin) to convert it to structured data that**confidence interval**definition What is indicate margin of error, combined with a probability that a value will fall in that range. The field of statistics offers specific**continuous variable**definition What is infinite number of values, typically within a particular range. For example, if you can express age or size with a decimal number, then**correlation**definition What is as between two sets of data.”[websters] If sales go up when the advertising budget goes up, they correlate. The correlation coefficient is**covariance**definition What is two variables whose values are observed at the same time; specifically, the average value of the two variables diminished by the product of**cross-validation**definition What is name given to a set of techniques that divide up data into training sets and test sets. The training set is given to the algorithm, along

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Glossary with explanation, developer answers.

Definition of Cross-Validation, Covariance, Correlation, Continuous Variable, Confidence Interval, Computational Linguistics, Coefficient, Clustering, Classification, Chi description.

What is Cross-Validation, Covariance, Correlation, Continuous in web development.