Use a variety of masses and lengths. Subtract formula values from measured to ge

Question

Use a variety of masses and lengths. Subtract formula values from measured to get the difference, if your value was lower you will get a negative value. At least once try repeating the same mass and length but with a different timekeeper. Q1) Looking at the difference Values, would you characterize your results as precise, accurate, both, or neither? Explain. Precise means there was little randomness involved and repeating the experiment will give the same result (though do not necessarily the result predicted by the formula). Accurate results might vary a lot but on average give the expected (formula) results.

Explanation / Answer

The results are neither precise or accurate for the first four reading as the difference is almost 10% error and the difference is not repeated. The next four readings are again neither precise or accurate for similar reasons.

The results obtained in the measurement 9 to 12 are both precise and accurate as the difference shows repeatability and the difference on an average will give the expected value.

The last four results are again neither precise nor accurate.

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