Cardiac Enzyme tests. An enzyme test is a blood test that measures certain enzyme levels to. assess how well the bodyâs systems are functioning. They can also be. used to determine whether there has been any tissue damage. Cardiac. enzyme tests are performed to help diagnose a heart attack and to.
The average salary was just $44,000 a year in the 1970.
Salaries tend to be skewed when you arrange them in order - a few very high earners can drive up the average, but do not affect the median. For example, the median salary in London is around Â£30,000; but the mean is more like Â£40,000 - skewed upwards by a small number of very high salaries. For this reason, when comparing salaries, the median is considered a more realistic number to use, as it is not affected by those very high earning outliers.