Interviews are example of Quantitative data Qualitative data All of the above None of the above Experimental studies are those that are intended to test cause-effect relationships (hypotheses) in a tightly controlled setting by separating the cause from the effect in time, administering the cause to one group of subjects (the "treatment group) nut not to another group ("the control group"), and observing how the mean effects vary between subjects in these two groups. True False are non-experimental designs that do not control for or manipulate independent variables or treatments but measure these variables and test their effects using statistical methods. true experimental designs cross sectional field surveys field surveys survey data Ordinal scales are those where the values measured are not only rank-ordered, but are also equidistant from adjacent attributes. True False