Which level of measurement can contain only qualitative data?

Nominal, ordinal, interval or ratio? Marital status of the faculty at BSHS

Qualitative or quantitative? The colors of automobiles on a used car lot

This occurs when a subject reacts favorably to a placebo when in fact the subject has been given no treatment at all.

Nominal, ordinal, interval, or ratio? Cost of a college education from universities in SC

Qualitative or quantitative? The final scores on a video game

What is the repetition of an experiment using a large group of subjects?

Which experimental design are you using if you divide subjects with similar characteristics into blocks, and then, within each block, randomly assign subjects to treatment groups?

What occurs when the experimenter cannot tell the difference between the effects of different factors on a variable?

Which level of measurement can contain qualitative or quantitative data?

Which experimental design are you using if subjects are paired up according to a similarity and one subject in the pair is randomly selected to receive one treatment while the other subject receives a different treatment?

Which sampling technique tends to lead to the most bias?

simple random, stratified, cluster, systematic, or convenience? Several people from each zip code in the county are given a survey.