Introduction to Statistics Part 2||सांख्यिकी का परिचय भाग 2|| @Dr. Rajesh Verma ​

|| @Dr. Rajesh Verma
||Playlist Link - https://www.youtube.com/playlist?list=PL1FhYf2NGo071l3do7LkGOYBQAPAKpR5t
||English version part 1 Link - https://youtu.be/WbcMNR4ssV8
||Hindi version Link - Coming soon
||Blogger Link for Notes - https://psychologytrajesh.blogspot.com/
||Some common Notations
1. 𝑿 ̅ – Mean of observed data or frequency distribution.
2. s – Standard deviation of observed data or frequency distribution..
3. s² – Variance of observed data or frequency distribution
4. µ - Mean of probability distribution or expected value or theoretical distribution.
5. σ – Standard deviation of probability distribution.
6. σ² - Variance of probability distribution.
7. ∑ - Summation

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