Measurement of Error

Multiple Choice

Why is it important to understand the measurement of errors in scientific experiments?

• To improve the accuracy of results

• To ignore small mistakes

• To make experiments more complicated

• To avoid using measurements

Fill in the Blank

Error is the ___ between the measured values of a quantity and its true values.

Multiple Select

Which of the following are methods to avoid instrumental error?

• Selecting a proper instrument and planning the proper procedure

• Ignoring the effect of errors

• Calibrating the instrument carefully against the standard

• Applying the proper connection factors

Fill in the Blank

One way to avoid environment error is by keeping the surrounding conditions ___.

Open Ended

Explain the difference between instrumental error and environment error as types of systematic errors.

Multiple Choice

Gross/human error is mainly caused by ___.

• Instrumental imperfection

• Environmental factors

• Human mistakes

• Random fluctuations

Open Ended

List two methods to minimize human error during measurement.

Open Ended

Given the measured times of 0.7s, 0.6s, 0.7s, and 0.8s for a pendulum swing, calculate the average measured time and the absolute error for the second measurement.

Multiple Choice

Which of the following is NOT a category of errors in measurement?

• Systematic error

• Gross/human error

• Random error

• Calculation error

Multiple Choice

Based on the example provided, what is the relative error (in %) for a mass measurement of 34.6g with an absolute error of 0.07g?

• 0.5%

• 0.2%

• 2%

• 1%

Open Ended

How would you explain the concept of error in your own words, and why is it important to understand errors in measurements?