Answer:
Macroeconomists focus on just a few key statistics such as inflation,unemployment, and GDP because they find it hard to focus on all the data in eachmarket. Thus, it will be difficult for them to examine every good or servicebecause it is time consuming and cumbersome.It will be better for economists to examine all the possible data though it will take muchtime. The economists thus, use the summary from the three measures above to getsome information of the economy as a whole.
Explanation:
Its called research, hope it helped ヾ(•ω•`)o
<span>Thomas holmes and richard rahe developed the social readjustment rating scale (srrs) to measure stress due to : </span><span>major life changes
According to them, most people who are used to a certain life style often experience some sort of emotional shocks, especially if the major life changes happen during productive age and within a short period of time.</span>
I think it is B. demonstrating the extent to which a measurement is free from random error.