n theory which level of measurement most appropriately permi

n theory, which level of measurement most appropriately permits the researcher to add, subtract, multiply, and divide?

Solution

Ratio Scale.

When constructing scales, it may be possible to construct the scale so the intervals between values are meaningful (interval level) and the zero point really means none of the characteristic in question (ratio level). If this is possible, then the scale is a ratio scale, the highest level of measurement. In this case, it is possible to add, subtract, multiply, and divide values of the variable. All the statistical procedures are possible with such a scale of measurement, and more detailed statistical manipulations of the data are possible.