Question

two clock are being tested against a standard clock located in a national laboratory . At 12:00:00 noon by the standard clock the reading of two clock Are:

Answer 1

I don't get it...,..

Answer 2

Answer:

The range of variation over the seven days of observations is 162 s for clock 1, and 31 s for clock 2. The average reading of clock 1 is much closer to the standard time than the average reading of clock 2. The important point is that a clock's zero error is not as significant for precision work as its variation, because a ' zero-error ' can always be easily corrected.Hence, Clock 2 is to be preferred to Clock 1.

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