M.COM Syllabus -Bhadrak (Auto) College, Bhadrak-W.E.F-2018-19

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Application of AM, GM, HM, Median and Mode

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  Lecturer Note: Application of AM, GM, HM, Median and Mode Application of AM-1 The arithmetic mean is best used when the sum of the values is significant. For example, your grade in your statistics class. If you were to get 85 on the first test, 95 on the second test, and 90 on the third test, your average grade would be 90. Why don't we use the geometric mean here? What about the harmonic mean? What if you got a 0 on your first test and 100 on the other two? The arithmetic mean would give you a grade of 66.6. The geometric mean would give you a grade of 0!!! That's just mean! This is why we generally require all values to be positive to use the geometric mean. The harmonic mean can't even be applied at all because 10 is undefined. Let's face it, people do get zeros on tests sometimes, so the geometric and harmonic means just aren't very practical for calculating things like grades. Could you give the formula for the geometric mean for a series of...
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Univariate Analysis

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M.Com-1st Sememster-2023, Bhadrak Autonomous College, Statistics

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  M.Com-1st Sememster-2023, Bhadrak Autonomous College Dr. Ramesh Chandra Das Asst. Professor of Commerce E-mail- rameshchandradas99@gmail.com Questions: (1) (a)     Three fair coins are tossed 3000 times. Find the frequencies of the distribution of heads and tails and tabulate the results. Also calculate the Mean and Standard Deviation of the distribution. (b)    The probability that a Poisson variate takes a positive value is (1-e -1.5 ). Find also the probability that x lies between -1.5 and +1.5 (c)     Airline passengers arrive randomly and independently of the passenger careening facility of a    major international airport. The mean arrival rate is on passenger per minute.                                         ...
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