Mathematics pret homeworks - Number
DefineStandard deviationVarianceArithmetic mean2345055310515FrequencyResearchFind out how to calculate standard deviation using the statistics mode on your calculator.MemoriseThe variance is the mean of the squares minus the square of the meanStandard deviation = variancePractise and ApplyFind the standard deviation of the data set:{16, 4, 3, 1, 5, 9, 7, 7, 21, 16, 20}Two companies in Malaysia and China produce iPods. Estimate the mean and standard deviation of the hourly production of these two companies for the last month. Compare the mean and standard deviation of the two production teams and draw a conclusion on productivity.MalaysiaChinaiPods per hourFrequencyiPods per hourFrequency400 – 4406400 – 4404441 – 4808441 – 48010481 – 52012481 – 52011521 - 5604521 - 5605The table below shows the number of occupants of each house in a road. Find the standard deviation of the number of occupants:OccupantsNumber of houses1225364105861 ................
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