Required meter accuracy to measure voltage to 1 part in 300

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Ghassan99
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Even My Dr. Doesn't understand this problem !

It's is desired to determine a voltage to within one part in 300.what accuracy of the meter is required?
 
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Why would you expect your Dr. to know about a voltage meter? "One part in 300" is 1/300= 0.003333333... or 1/3 of one percent. That is the accuracy.