HETEROSCEDASTICITY CONCEPTS IN PROPER AND DETAILED ANALYSIS. ENGLISH PREPARATION.

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In statistics, a collection of random variables is heteroscedastic (or heteroskedastic; from Ancient Greek hetero “different” and skedasis “dispersion”) if there are sub-populations that have different variabilities from others. Here "variability" could be quantified by the variance or any other measure of statistical dispersion. Thus heteroscedasticity is the absence of homoscedasticity.
The existence of heteroscedasticity is a major concern in the application of regression analysis, including the analysis of variance, as it can invalidate statistical tests of significance that assume that the modelling errors are uncorrelated and uniform-hence that their variances do not vary with the effects being modeled. For instance, while the ordinary least squares estimator is still unbiased in the presence of heteroscedasticity, it is inefficient because the true variance and covariance are underestimated. Similarly, in testing for differences between sub-populations using a location test, some standard tests assume that variances within groups are equal.

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[@wonttell293]

Ur way of explanation is good ma'am.. but heteroscedasticity problems exist when the variances are not equal.. 😔😔

[@MotivNationHQ]

Heteroscedasticity refers to unequal variance i.e variance of UI not equal to sigma square

[@educationalcenter4932]

Please you are not says true about Hetroscedasticity because it have different vatiances

[@SalmanAhmad-cf7lf]

Explained very well no one in youtube explains it like you. Thank you

[@urc9859]

Mujhe lagta h mam aap duniya ki sabse sundar teacher👩‍🏫‍ h

[@jyotsnashambhavi917]

This is wrong

[@santoshbabu6379]

Plz don't missguided the students and provide full information . I feel in your video totally time based.

[@lipusena1388]

I love this teaching style ma'am

[@meghnasingh7323]

Ma'am you are teaching homoscedasticity

[@lexwizard190]

Nicely explained...u r so good

[@debakinandansahoo9333]

It is the concept of homoscedasticity

[@archisarker2920]

i think there is a little bit mistake in ur lecture mam

[@RidhimaThakur-i3i]

Pzzz provide me link of CLRM

[@harshmishra3346]

Mam plz check you have taught about homoscadastisity

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[@kumariguruge7904]

Explained clearly

[@klaustaibon8031]

Is there also a lesson on time series

[@chandraprabhachauhan9934]

When two variables are said to be heteroscedastic?

[@statisticslearning]

Nice

[@theallientv5301]

you are amazing

[@urc9859]

Mam aap kitna sundar h 👌👌👌👌👌

[@Jawadalikhan143]

Beautiful teacher with classic way of teaching

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Hello madam your classes so nice. I am M.Phil economics graduate. Please post ugc net economics syllabus vedios

[@zabryrose3120]

thanks madam

[@sojibulislam1004]

nice
teacher

[@p.k.economics3592]

Mam hindi me v bataye na

[@sateeshpandey6465]

दूसरे लोक से तो आयी हैं, नही।

[@LearnStatisticsTool]

you are beautiful 😍

[@Sanatan.dharmm]

TIME WASTE👎🏻

[@sateeshpandey6465]

मैडम हिंदी भी इस्तेमाल करें।दिक्कत होती है।

[@kk-pu7di]

If an illerate like you can't understand a simple English then you are expecting to have a knowledge of econometrics.