Which of the following ways will improve the uncertainty on a measurement? Selec

Question

Which of the following ways will improve the uncertainty on a measurement? Select all that apply. Repeat the measurement a number of times and average the result (i.e. measuring once vs measuring 50 times) Have different people use the same instrument to make independent measurements, and average the result (i.e. you alone make 2 measurements vs. you make one measurement, your lab partner makes another measurement Changing the method used to obtain the measurement (i.e. hold the ruler vertically instead of horizontally). Changing the instrument used to obtain the measurement (i.e. get a different ruler from another student). Measure a different object using the same instrument (ie. measuring the mass of a pebble vs. measuring the mass of a large rock)

Explanation / Answer

first and fourth option are correct.

by making more number of measurements, random errors can be eliminated

by using another instrument with better precision, uncertainty can be reduced.

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