Instrument Characteristics Quiz

What is the definition of accuracy in measurement?

• Difference between measured value and theoretical value

• Closeness of measured data to each other

• Degree of agreement using different instruments

• Closeness of measured data to the true value

Which of the following is NOT a static property of measuring instruments?

• Linearity

• Sensitivity

• Bias/Offset

• Resolution

What does repeatability refer to in measurements?

• Closeness of measurements over a long period

• Degree of agreement using different instruments

• Closeness of measurements under the same conditions

• Closeness of measurements under different conditions

What is the formula for calculating relative error to measurement?

• (Measured Value - True Value) / True Value

• (True Value - Measured Value) / True Value

• (Measured Value - True Value) / Span

• (Measured Value + True Value) / True Value

In the context of instrument sensitivity, what does a higher sensitivity indicate?

• Increased error in measurements

• No change in output with input change

• Lower output change for a given input change

• Greater output change for a given input change

What is the purpose of determining the range of an instrument?

• To find the minimum and maximum values it can measure

• To calculate the average of measurements

• To assess the accuracy of the instrument

• To determine the sensitivity of the instrument

How is the span of an instrument defined?

• Total number of measurements taken

• Maximum value of the measured variable

• Average of all measured values

• Difference between upper and lower range values

What is the significance of significant figures in measurement?

• To assess the repeatability of measurements

• To calculate the range of an instrument

• To determine the accuracy of a measurement

• To indicate the precision of a measurement

Which of the following best describes the concept of drift in measurements?

• Variation in measurements due to environmental changes

• Consistent error across the full range of measurement

• Random fluctuations in measurement readings

• Increased accuracy over time

What statistical method is used to estimate the expected value of repeated measurements?

• Mean

• Mode

• Median

• Standard deviation