INTERPRETATION AND REPORT WRITING
SCIENTIFIC REPORT WRITING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ensure all measurements are accurate
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repeat the experiment multiple times to gather similar results
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ensure all variables are controlled except for 1
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None of the above
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Detailed explanation-1: -Calibration is the number one item on this list for a very important reason: it is the MOST critical means of ensuring your data and measurements are accurate. Calibration involves adjusting or standardizing lab equipment so that it is more accurate AND precise.
Detailed explanation-2: -A measurement system can be accurate but not precise, precise but not accurate, neither, or both. For example, if an experiment contains a systematic error, then increasing the sample size generally increases precision but does not improve accuracy.
Detailed explanation-3: -Accuracy refers to the closeness of a measured value to a standard or known value. For example, if in lab you obtain a weight measurement of 3.2 kg for a given substance, but the actual or known weight is 10 kg, then your measurement is not accurate. In this case, your measurement is not close to the known value.
Detailed explanation-4: -Collect as multiple measurements of the needed material. Find the average value of your measurements. Find the absolute value of the difference of each measurement from the average. Determine the average of all the deviation by adding them up and dividing by the number of measurements.