Lec-21: Mean, Median And Mode of Grouped Data | Probability and Statistics

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sir in the mode if highest frequency is first or llast then how to get succedinng or precedding frequencies?

siddharthgurjar
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In this video, the instructor discusses the concepts of mean, median, and mode for grouped data. Different formulas for calculating mean using direct method, assumption mean method, and step deviation method are explained. The process of finding mode and median for grouped data is also demonstrated.

Key moments:
00:01 The video explains the formulas for mean, median, and mode of group data using direct method, assumption mean method, and step deviation method.
-Direct method for calculating mean in group data using the formula summation of f * x / summation of f.
-Assumption Mean Method is used for larger data sets or when values are in decimals.
05:45 The video explains the direct method, assumption method, and step deviation method in statistics, followed by calculating the mode using specific formulas and identifying the model class.
-Explanation of direct method, assumption method, and step deviation method in statistics.
-Calculation of mode using formulas and understanding the concept of the model class.
11:38 Understanding cumulative frequency (CF) is crucial for finding the median in frequency distribution data. Calculating CF involves adding up frequencies to determine the total count.
-Calculating cumulative frequency (CF) involves adding up frequencies progressively to get the total count.
-Determining the median class requires finding the lower limit, upper limit, and class width of the data.

alkkumar
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Upload lectures of probability and permutations

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