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1) The scores in Mathematics of 15 students are given below. Find range, sample variance and standard deviation.93 85 78 79 97 90 82 61 53 63 94 69 84 67 95
Show and explain your steps.
2) The following are the prices charged (in cents) for a can of chicken soup at 20 super markets.80 89 81 78 92 82 79 85 79 85 91 80 81 84 90 79 79 78 92 84
a) Calculate the mean and standard deviation.
b) What percentage of data lies in the interval μ ± σ ? In the interval μ ± 2σ ?
suppose that we will randomly select a sample of 64 measurements from a population having a mean equal to 20 and a
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1. mention the characteristics of statistics. explain any two applications of statistics.2. distinguish between primary
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