Statistics

This collection focuses on the understanding of discrete and continuous random variables. It also throws light on concepts like expected value, variance, covariance and correlation of the random variables. The major part of this collection focuses on what is sampling and why we require estimators. Once we choose estimators, how do we know which is a good estimator and what are the measures for testing it. It also throws light on Hypothesis testing- 5% significance level and 1% significance level test and the difference between the two. You guys will get a clearer understanding by working out some exercises on the concepts of Probability distribution, expected value, variance, Unbiasedness and Efficiency. 

IIT JEE 2020 and 2021 Main and Advanced exam preparation. Know about detailed syllabus, best books, exam pattern and dates. Cover previous year question papers and book solutions from great educators.

IIT JEE

JEE Main and Advanced Preparation

English

Random Variables, Sampling And Estimation

Algebra

Mathematics

IITJEE, NEET UG and Foundation

This lesson focuses on the understanding of population variance and standard deviation of a discrete random variable. What you need to focus is on the formula and you can refer the example as well for a better understanding. 



Population Variance Of Discrete Random Variables

Discrete Random Variables

Population Covariance And Correlation

Understanding Of Sampling And Estimators

Estimators Of Variance, Covariance And Correlation

Overview Of Hypothesis Testing

Hypothesis Testing At 1% Significance Level

Proofs Of Variance And Covariance Rules

Exercise On The Concept Of Expected Value And Variance

Exercises On The Concept Of Unbiasedness And Efficiency

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Population Variance Of Discrete Random Variables

Shreelekha Verma

Random Variables, Sampling And Estimation

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