Which of the following most closely relates to the idea of opportunity costs?

Astock with a beta of 0.6 has an expected rate of return of 13%. if the market return this year turns out to be 10 percentage points below expectations, what is your best guess as to the rate of return on the stock? (do not round intermediate calculations. enter your answer as a percent rounded to 1 decimal place.)

Match each item to check for while reconciling a bank account with the document to which it relates.(there's not just one answer)1. balancing account statement2. balancing check registera. nsf feesb. deposits in transitc. interest earnedd. bank errors

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.