Continuous variables have values (a quantity) that can be given a magnitude either by counting or by measuring.

• A. Variables that have no numerical value.
• B. Variables that have values which can be given a magnitude by counting or measuring.
• C. Variables that are always fixed.
• D. Variables that are only qualitative.

Answer: (B)

Continuous variables are numerical quantities that can take any value within a range, with the actual magnitude determined by measurement. You can obtain precise values such as 12.7 cm or 23.4 seconds, showing that these quantities have measurable magnitudes. This makes them quantitative rather than qualitative, and they’re not fixed but can vary. The option that describes them as having no numerical value, always fixed, or only qualitative doesn’t fit, because the defining feature is that they have numerical magnitudes obtained by measurement.