MEC400 - Chapter 5: Data Acquisition and Representation Quiz

What is the process of quantifying physical quantities using calibrated instruments and established procedures to obtain numerical values of varying degree called?

• Measurement

• Parameter

• Standard

• Calibration

Which type of variable is a quantity that may change during the course of investigation?

• Parameter

• Independent variable

• Variable

• Dependent variable

What is the study of the relationships among variables used to determine a curve that minimizes the error and provides a good approximation to the physical problem?

• Linear regression

• Statistical analysis

• Empirical function

• Regression analysis

What is the criterion for least-squares approach to minimize the sum of the squares of the residuals?

• Minimize the total error

• Minimize the sum of the absolute values of the differences

• Minimize the sum of the squares of the errors

• Minimize the sum of the squares of the residuals

What is the coefficient of correlation that indicates the straight line is a good fit to the data?

• r = ± 1

• r = 0.8

• r = 0

• 0 < r < 1

What is the science of decision making in uncertain situations?

• Empirical function

• Regression analysis

• Error analysis

• Statistical analysis

What is the process of validating a measuring instrument into agreement with the physical standard(s) upon which the instrument is based?

• Parameter

• Standard

• Calibration

• Measurement

Which method is known as regression analysis and is used to determine a curve that minimizes the error and provides a good approximation to the physical problem?

• Regression analysis

• Empirical function

• Linear regression

• Statistical analysis

What is the type of empirical function that repeats its values in regular intervals or periods?

• Exponential

• Power

• Linear

• Periodic

What is the process of quantifying physical quantities using calibrated instruments and established procedures to obtain numerical values of varying degree called?

• Calibration

• Standard

• Measurement

• Parameter