Analytical Chemistry Quiz

What do significant figures reflect in a measurement?

• Accuracy

• Precision

• Uncertainty

• Variability

Which rule states that non-zero digits are always significant in a measurement?

• Rule 1

• Rule 2

• Rule 3

• Rule 4

What is the SI unit for mass?

• Liters (L)

• Ounces (oz)

• Milliliters (mL)

• Kilograms (kg)

What does ppm stand for in analytical chemistry?

• Purity per million

• Percentage per million

• Parts per million

• Proportion per million

What does RSD stand for in statistical analysis?

• Relative Sampling Distribution

• Relative Standard Deviation

• Random Sampling Distribution

• Regression Standard Deviation

What is the measure of central tendency in a set of numbers?

• Standard Deviation

• Mean Value

• Absolute Error

• Relative Deviation

What is the measure of the amount of variation or dispersion in a set of values?

• Relative Standard Deviation

• Standard Deviation

• Absolute Error

• Mean Value

What is the degree of freedom in the calculation of standard deviation?

• n - 1

• 2n

• n

• n + 1

What is the standardized measure of the dispersion of a probability distribution?

• Coefficient of Variation (CV)

• Mean Value

• Standard Deviation

• Relative Standard Deviation (RSD)

What is the concentration range of the analyte used for selecting an analytical method?

• Low

• High

• Narrow

• Wide