b. What statistical measure in portfolio risk computation (as in part a) captures the process of risk reduction when forming portfolios

Reliability and validity reliability and validity are two important considerations that must be made with any type of data collection. reliability refers to the ability to consistently produce a given result. in the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways. unfortunately, being consistent in measurement does not necessarily mean that you have measured something correctly. to illustrate this concept, consider a kitchen scale that would be used to measure the weight of cereal that you eat in the morning. if the scale is not properly calibrated, it may consistently under- or overestimate the amount of cereal that’s being measured. while the scale is highly reliable in producing consistent results (e.g., the same amount of cereal poured onto the scale produces the same reading each time), those results are incorrect. this is where validity comes into play. validity refers to the extent to which a given instrument or tool accurately measures what it’s supposed to measure. while any valid measure is by necessity reliable, the reverse is not necessarily true. researchers strive to use instruments that are both highly reliable and valid.

1. what are the unique operational challenges to delivering fresh meals? 2. why is speed of delivery so important for delivered meals? what variety of options contribute to this performance metric? 3. how could operations management concepts be utilized to improve the performance of freshly? 4. what are your typical product delivery times? what would be required to speed these up? 5. what are your delivery batch quantities? how could you reduce batch size and reduce delivery cost simultaneously using operations management concepts?

Georgia orchards produced a good crop of peaches this year. after preparing the following income statement, the company is concerned about the net loss on its no. 3 peaches. georgia orchards income statement for year ended december 31, 2017 no. 1 no. 2 no. 3 combined sales (by grade) no. 1: 300,000 ibs. @ $1.50/lb $ 450,000 no. 2: 300,000 ibs. @ $1.00/lb $ 300,000 no. 3: 750,000 ibs. @ $0.25/lb $ 187,500 total sales $ 937,500 costs tree pruning and care @ $0.30/ib 90,000 90,000 225,000 405,000 picking, sorting, and grading @ $0.15/ib 45,000 45,000 112,500 202,500 delivery costs 15,000 15,000 37,500 67,500 total costs 150,000 150,000 375,000 675,000 net income (loss) $ 300,000 $ 150,000 $ (187,500 ) $ 262,500 in preparing this statement, the company allocated joint costs among the grades on a physical basis as an equal amount per pound. the company’s delivery cost records show that $30,000 of the $67,500 relates to crating the no. 1 and no. 2 peaches and hauling them to the buyer. the remaining $37,500 of delivery costs is for crating the no. 3 peaches and hauling them to the cannery. required: 1. prepare reports showing cost allocations on a sales value basis to the three grades of peaches. separate the delivery costs into the amounts directly identifiable with each grade. then allocate any shared delivery costs on the basis of the relative sales value of each grade. (do not round intermediate calculations.)