Answer 11.The histogram and the summary statistics for the variable length of delivery time is shown below:0.000.100.200.300.400.500.600.700.800.90051015202530HistogramDelivery time (minutes/ton.km)PercentDelivery time (minutes/ton.km)count50mean0.3788sample variance0.0329sample standarddeviation0.1813minimum0.09maximum0.82range0.73skewness0.5333kurtosis-0.1401coefficient of variation(CV)47.86%1st quartile0.2300median0.35503rd quartile0.4775interquartile range0.2475mode0.3200According to the summary statistics, the mean delivery time is 0.3788 minutes/ton.km, The range of thedelivery time is 0.73 minutes/ton.km.
The Histogram and summary statistics for the variable Customer satisfaction is shown below:123456789101105101520253035HistogramCustomer satisfactionPercentCustomersatisfactioncount50mean5.10sample variance4.05sample standarddeviation2.01minimum1maximum10range9skewness0.14kurtosis0.08coefficient of variation(CV)39.46%1st quartile4.00median5.003rd quartile6.00interquartile range2.00mode5.00According to the summary statistics, the mean customer satisfaction is 5.10, The range of the customersatisfaction is 9 and the standard deviation is 2.01.
The Histogram and summary statistics for the variable Sales Price is shown below:340360380400420440460480500520540051015202530HistogramSale price ($/ton)PercentSale price ($/ton)count50mean404.18sample variance1,760.72sample standarddeviation41.96minimum345maximum520range175skewness0.70kurtosis0.04coefficient of variation(CV)10.38%1st quartile375.75median395.503rd quartile433.50interquartile range57.75mode407.00 According to the summary statistics, the mean sale price is 404.18 ($/ton), The range of the sale price is 175($/ton) and the standard deviation is 41.96 ($/ton).
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