1. The following table shows the consumption of electricity of 100 householders during a particular week....
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1. The following table shows the consumption of electricity of 100 householders during a particular week. iv. Consumption (kilowatt hours) 0-under 10 10-under 20 20-under 30 30- under 40 40- under 50 50-under 60 60-under 70 70-under 80 80 or over Calculate the: i. ii. iii. Mean electricity consumption Lower quartile Upper quartile Interpret your answers. Number of Households 5 8 20 29 20 11 6 1 0 [5 marks] [5 marks] [5 marks] [2 marks] 2. The human resources department of a company recorded the number of days absent for 23 employees in the technical department over the past nine months: 5 4 8 17 30 5 6 2 16 15 10 18 4 9 12 6 6 15 15 [2 marks] 10 10 9 5 i. Compute the first quartile and the third quartile of the number of days absent. [10 marks] ii. Interpret the quartile values for the human resources manager. [2 marks] [6 Marks] iii. Estimate and interpret the 74th percentile 1. The following table shows the consumption of electricity of 100 householders during a particular week. iv. Consumption (kilowatt hours) 0-under 10 10-under 20 20-under 30 30- under 40 40- under 50 50-under 60 60-under 70 70-under 80 80 or over Calculate the: i. ii. iii. Mean electricity consumption Lower quartile Upper quartile Interpret your answers. Number of Households 5 8 20 29 20 11 6 1 0 [5 marks] [5 marks] [5 marks] [2 marks] 2. The human resources department of a company recorded the number of days absent for 23 employees in the technical department over the past nine months: 5 4 8 17 30 5 6 2 16 15 10 18 4 9 12 6 6 15 15 [2 marks] 10 10 9 5 i. Compute the first quartile and the third quartile of the number of days absent. [10 marks] ii. Interpret the quartile values for the human resources manager. [2 marks] [6 Marks] iii. Estimate and interpret the 74th percentile
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