Question

When collecting performance measures on a system (either one that is soon to be replaced, or one that has recently been implemented), business analysts will often consider the volume or sample size of performance measures, as well as their currency.

a) What can be some of the problems with being able to obtain reliable information in regards to the volume or sample size of measurements? What sort of compromise may be required in this regard?

b) What impact does the currency of measurements have on the quality of measurements obtained?

Answer 1

Answer:-(A)Reliability is, literally, the extent to which we can rely on the source of the data

and, therefore, the data itself. Reliable data is dependable, trustworthy, unfailing,

sure, authentic, genuine, reputable. Consistency is the main measure of reliability. So,

in literary accounts, the reputation of the source is critical. In John Cole’s view,

Richard Crossman was not a reliable diarist. Indicators of reliability will include proximity to events, (whether the writer was a participant or observer,) likely impartiality and whether, as the police say, the record was really contemporaneous or an eventide reflection on the day’s events. Very few politicians admit to realfailings: all too often, their own agenda appears to justify their actions or to criticise others. Tony Benn’s diaries seek to portray the inner workings ofcabinet government. But Dennis Healey claimed (playfully) that Tony Benn ‘always seemed to be on the toilet every time a difficult decision had to be made’ (BBC2 interview. Accounts may have been ‘sexed up’ to promote sales. Biographies maybe hagiographic. For example, Michael Foot’s biography of Aneurin Bevanu uncriticallyportrays the Welshman as a wholly heroic figure, whereas my father – a fellow native of Blaenau-Gwent – told me how, after 1948, some local tradeunionists called the Ebbw Vale MP ‘Urinal Bevan’

Answer:-(B). The three main economic variables you should track are: Inflation rate, Unemployment rate, and the GDP Growth rate.

The desired values depend on the country. In the United States, the desired values are: Inflation = 2%, Unemployment rate = 5%, and GDP Growth rate = 3%