Q2. Calculate Standard Deviation, Variance and Co-efficient ofvariationWeight(Kg)No. of Residents10-2010020-308530-4012540-502050-603060-70570-80

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Answered: Q2. Calculate Standard Deviation,…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Give 2 examples of Variance and standard deviation for grouped data to coefficient of skewness and kurtosis
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None
2. A consumer organization is producing an article on refrigerators. The organization tests 20 models of refrigerator (under rigorous conditions), and determines how long each refrigerator operates properly before needing to be serviced. The histogram below shows the operation times (in months) until service is required. You may assume that in this data set there were no observations at the class boundaries. Histogram of operation 160 120 operation 80 200 (a) What percentage of the refrigerators operate properly for more than 80 months? (b) Briefly describe the shape of this distribution. (c) Would a pie chart also be appropriate for describing these data? Explain briefly. on4 m Asuorbo
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Q2) The frequency table below shows the Compressive strength of concrete samples results: Compressive strength (MPa) 25 - 34 35 - 44 45 - 54 55 – 64 65 - 74 No. of samples 10 9. 12 8 6. 1- Calculate the Mathematical Mean, Median and Mode. 2- Calculate Variance, Standard Deviation and Mean Absolute Deviation.

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Q2. Calculate Standard Deviation, Variance and Co-efficient of variation Weight (Kg) No. of Residents 10-20 100 20-30 85 30-40 125 40-50 20 50-60 30 60-70 70-80