covariance

CEFRC1

/kəʊˈvɛː.ɹi.əns/

noun

Türkçe translations

Translating…

In plain English

  1. 01

    noun

    A measure of how two variables change together.

  2. 02

    noun

    Extra detail

    The conversion of data types from wider to narrower in certain situations.

Examples

  • Covariance was used to analyze the stock prices.

  • The statistician calculated the covariance between the two variables.

At a glance

Sits at C1 on the CEFR scale

Senses
3
Parts of speech
1
Citations
4

Also pronounced

  • /kəʉˈveː.ɹi.əns/
  • /koʊˈvæɹ.i.əns/

Deep Dive

noun

Extra meaning

  1. A statistical measure defined as scriptstyle operatorname Cov(X,Y)= operatorname E((X-μ)(Y-ν)) given two real-valued random variables X and Y, with expected values scriptstyle E(X),=,μ and scriptstyle E(Y),=,ν.

More examples

In context

  • The statistician studied the covariance of the data.

  • The elements of such a correlation matrix do not have asymptotic variances and covariances of the form (1.2), even if S has a Wishart distribution.

  • As we will see in Chapter 8, we see both covariance and contravariance throughout the Java Collections. They largely exist to ensure that the generics just “do the right thing” and behave in a manner that should not surprise the developer.

Quick test

Two questions on this entry. Nothing is scored.

Question 1 · Quick check

In statistics, the blank measures how two variables change together.

Practise this properly in the app, where the word comes back before you forget it.

Nearby

Origin

noun

From co- + variance.