Authentication is a means of providing proof of data transmission or receipt so that the occurrence of a transaction cannot later be refused

After paired comparison scaling, the most popular comparative scaling technique is ________

A) perceptual scaling B) constant sum scaling C) rank order scaling D) semantic differential scaling E) semantic meaning scaling

Which of the following statements is true concerning cross-tabulations with two variables?

A) Cross-tabulation with two variables is also known as bivariate cross-tabulation. B) Because two variables have been cross-classified, percentages could be computed either column-wise, based on column totals, or row-wise, based on row totals. C) The general rule is to compute the percentages in the direction of the independent variable, across the dependent variable. D) All of the above statements are true.