you conduct a thorough statistical analysis of the capabilities of three...
This statement is not applicable. The statistical analysis concludes that the machine is under performing due to its age and its repair cost. The supervisor knew the fact that the machine is old and costly to repair but could not relate that fact to the other fact that the machine is under performing
This statement is not applicable. The detailed analysis was to study whether there is a link between the performance of the machine with the condition of the machine. Detailed analysis was necessary.
The statement is not applicable. The statistical analysis was conducted thoroughly, more likely had gone through several hypotheses, less likely to have an error. The supervisor's statement, however, was based on intuition only which leaves room for bias and error.
The statement is applicable. There might be a need to present more data to convince the supervisor.
In order to answer this effectively, I'd need to know the topic of research. One cannot just assume that qualitative is better than quantitative (or the other way around). The type of research design used must fit the topic.
Though sometimes questioned by scientific researchers, qualitative investigations can provide reliable data if a credible research technique is employed. There are some research topics for which qualitative methods are extremely well-suited. Social science and educational researchers use qualitative research methods to study various phenomenon because these techniques make it possible to reveal attitudes, opinions, and perceptions of a population.
On the other hand, quantitative research methods, which relies on the collection and analysis of statistical data to investigate a problem, may be more appropriate in some instances. Quantitative research offers some advantages in that it is based on statistics and, as a rule, free from bias.
A mixed design, using both qualitative and quantitative methods may be appropriate for some investigations. Some qualitative researchers point out that the strict use of quantitative research methods alone may unwittingly cause the researcher to omit vital information that would be best collected and analyzed via a qualitative design. Likewise, strictly quantitative researchers are quick to point out that there may be underlying biases in qualitative research.
The research design should align with the topic. Whichever model is selected, it is essential to strictly follow the research protocol for the selected design and make sure that all limitations of the research are noted is essential in reporting results. Additionally, if using quantitative methods, it is essential to review the data set to be sure that all of the assumptions of any statistical analysis used are met.
Internal validity means that it it valid for the population within the study internal = study). While external validity means that it has wider applications and is valid for people outside the study or in different setting. In other word, a statistical analysis has internal validity if the statistical inferences about causal effects apply for those being studied. It has external validity when if can be generalized to other settings and populations. The answer choice which best matches this is B.
A. A statistical analysis is said to have external validity if the statistical inferences about causal effects are valid for the population being studied. The analysis is said to have internal validity if conclusions can be generalized to other populations and settings.
B. A statistical analysis is said to have internal validity if the statistical inferences about causal effects are valid for the population being studied. The analysis is said to have external validity if conclusions can be generalized to other populations and settings.
C. A statistical analysis is said to have internal validity if the statistical inferences about causal effects can only be verified by a few researchers. The analysis is said to have external validity if conclusions can be verified by many researchers.
D. Internal validity and external validity are equivalent.
yes yes yes yes yes yes yes yes yes