The coefficients IRC and ITC are both reported as ______ and are therefore ______.

The coefficients IRC and ITC are both reported as ______ and are therefore ______.

• A. They are reported as fractions and are therefore dimensionless.
• B. They are reported as percentages and are therefore dimensionless.
• C. They are reported as percentages and are therefore units.
• D. They are reported as fractions and are therefore units.

Answer: (B)

Coefficients that express a portion of a base are ratios and carry no units; they’re shown as percentages to convey the share per hundred. Because IRC and ITC are such ratios, expressing them as a percentage communicates a part-to-whole relationship without introducing a physical unit. The percent sign is just a way of writing a ratio, so the numbers remain dimensionless. That’s why the correct interpretation is that they’re reported as percentages and are therefore dimensionless.

Coefficients that express a portion of a base are ratios and carry no units; they’re shown as percentages to convey the share per hundred. Because IRC and ITC are such ratios, expressing them as a percentage communicates a part-to-whole relationship without introducing a physical unit. The percent sign is just a way of writing a ratio, so the numbers remain dimensionless. That’s why the correct interpretation is that they’re reported as percentages and are therefore dimensionless.