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Mathematical statistics is the application of probability theory, a branch of mathematics, to statistics, as opposed to techniques for collecting statistical data.
Statistics is the science which deals with the collection, presentation, analysis, and interpretation of numerical data. In singular form, statistics is taken as subject and in plural form, it means data.
In lecture 1 of statistics chapter from class 9, Surabhi Ma'am will explain
1) Definition of statistics - 07:58
2) Data - 08:59
3) Variable - 13:04
4) Continuous and Discrete Variables - 14:11
5) Important Terms - 15:57
6) Raw or ungrouped data - 18:57
7) Array - 19:47
8) Preparation of Frequency Distribution Table from Raw Data - 20:07
9) Group Data - 23:27
10)Class Interval - 24:25
11) Examples - 28:33
12) Important term related to Grouped data - 36:07
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