statistical tools for data analysis and interpretation pdf

A single weak link might produce unreliable results. The overall quality of the results depends on the entire chain of events. In some cases, you might want to take the raw data and use it to cluster observations in similar groups by using patterns in the data to help target your research or interventions. This process includes constructing the study design, selecting and measuring the variables, devising the sampling technique and sample size, cleaning the data, and determining the analysis methodology among numerous other issues. Using statistical analyses to produce findings for a study is the culmination of a long process. Statisticians Know How to Avoid Common Pitfalls Statisticians ensure that all aspects of a study follow the appropriate methods to produce trustworthy results. In fact, statistical analyses account for uncertainty and error in the results. When analysts use statistical procedures correctly, they tend to produce accurate results.

Along the way, statisticians can help investigators avoid a wide variety of analytical traps. Statisticians offer critical guidance in producing trustworthy analyses and predictions.

Statistical tools for data analysis and interpretation pdf