The section about target weighting (see Target weighting) says that sometimes you might not know the actual counts of respondents in a group, even though you might know that the group is a certain percentage or proportion of the total population. For example, you might know that 60% of the population is women, but you might not know how many women that represents.

When this happens, you can enter the percentages or proportions as the weights for each group, and use the keyword input to indicate that these figures should be used as targets. For example, in a table of age by sex you would enter the proportion or percentage that each combination of age and sex is of the total population, and Quantum would calculate what weight to assign to each respondent in each category.