The best method to reduce random error is

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(C) Random errors are unpredictable fluctuations in experimental conditions. Since these errors can be positive or negative,they tend to cancel each o

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To repeat the experiment many times and to take the average of results

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(C) Random errors are unpredictable fluctuations in experimental conditions. Since these errors can be positive or negative,they tend to cancel each other out over a large number of observations. Therefore,the most effective method to minimize random error is to repeat the experiment many times and calculate the arithmetic mean of all the observed results.

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