Observation and Stratified Sampling in Research Work - Essay Example

Observation is most appropriate in instances where the data are not easily quantified. Observation study is mostly used in instances where intangible aspects, such as emotions, are involved. Observation is used to determine unforced, innate behavioral patterns in natural settings. What are the benefits of stratified sampling? There are a number of benefits of stratified sampling such as the certainty of representativeness, correlation between strata, and knowledge of all strata and their distinctive features.

Stratified sampling generates higher accuracy than random sampling. Moreover, it is usually easier to stratify a sample than to choose randomly. In stratification, researchers can focus on a small number of characteristics and it is more cost-effective and less time-consuming. Stratified sampling also ensures greater coverage, representativeness, or generalizability. The research using stratified sampling has adequate control over the sample; hence it generates findings that are precise and impartial.

Stratified sampling is the best method to acquire data that represent the diversity of the population under study.