Covariance, Mathematics

Assignment Help:

Covariance

The variance is a measure of the variability or dispersion in a variable or data set.

A measure of the variability of one variable (or data set) in relation to another variable (or data set), is the covariance.

The variability of one variable (or data set) {X} in relation to another variable (or data set) {Y} would depend upon three factors:

  1.     The variability of X which may be measured by the standard deviation sx of X.
  2.     The variability of Y which may be measured by the standard deviation sy of Y.
  3.     The correlation between X and Y.

Hence, if the variable X is the same as the variable Y, the covariance between the two reduces to the variance of either.

In other words, the variance is a special case of covariance.


Related Discussions:- Covariance

Calculate what number of workers should be hired, You are given the followi...

You are given the following information about the amount your company can produce per day given the number of workers it hires. Numbers of Workers Quanti

determine that the relation is symmetric and transitive, 1. Let R and S be...

1. Let R and S be relations on a set A. For each statement, conclude whether it is true or false. In each case, provide a proof or a counterexample, whichever applies. (a) If R

Example of making connections of a child with maths, After a lot of effort,...

After a lot of effort, 8-year-old Hari worked out 2 x 88 = 176. When asked to say what 2 x 89 was, after a lot of hard work, he produced the answer 178. How would you help him to r

Find the angle of elevation, A 50-foot pole casts a shadow on the ground. ...

A 50-foot pole casts a shadow on the ground. a) Express the angle of elevation θ of the sun as a function of the length s of the shadow. (Hint you may wish to draw this firs

Matrices, what is the business application of matrices

what is the business application of matrices

Extrema- minimum and maximum values, Extrema : Note as well that while we ...

Extrema : Note as well that while we say an "open interval around x = c " we mean that we can discover some interval ( a, b ) , not involving the endpoints, such that a Also,

Area, area of r=asin3x

area of r=asin3x

Hypergeometric distribution, Hypergeometric Distribution Consider the p...

Hypergeometric Distribution Consider the previous example of the batch of light bulbs. Suppose the Bernoulli experiment is repeated without replacement. That is, once a bulb is

Example of multiplication, Example 1: Multiply 432 by 8. Solution: ...

Example 1: Multiply 432 by 8. Solution:        432 ×        8 --------------       3,456 In multiplying the multiplier in the units column to the multiplica

Ordinary differential equations, Give me the power series solution of Halm'...

Give me the power series solution of Halm''s differential equation

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd