Statistics and probability subject

7. Explain the difference between qualitative and quantitative data. Give examples of qualitative and quantitative data. 8. Explain the difference between: (a) nominal and ordinal data, (b) a census and a sample survey, 9. Clusters versus strata 1. With a cluster random sample, do you take a sample of (i) the clusters? (ii) the subjects within every cluster? 2. With a stratified random sample, do you take a sample of (i) the strata? (ii) the subjects within every stratum? 3. Summarize the main differences between cluster sampling and stratified sampling in terms of whether you sample the group or sample from within the group the form the clusters or strata. 10. In cluster random sample with equal-sized clusters, every subject has the same chance of selection. However, the sample is not a simple random sample. Explain why not