Certain patterns in responses warrant cases to be removed to protect the integrity of data. Cases should be flagged where respondents answer too quickly or slowly. Additionally, responses may need to be removed from participants who drop off after certain points, answer with limited to no variance or answer antithetical questions inconsistently.

Particular assumptions about the shape of the distribution, parameters, variance and other data set factors need to be met for specific types of analyses. Failing to meet assumption requirements will severely undermine analysis potential and relevance.

A systematic review begins with a research question or focus and uses previously conducted research to answer. A meta-analysis may be used as part of a systematic review as it is the process of combining results from numerous previous studies into a single estimate or effect size. Both approaches use a multitude of existing research to address new or particular research concerns.

Secondary data can suplement or replace certain parts of research that may be s

Obtaining a representative sample depends on your awareness of your target audience. It is important to do some background research in order to accurate reflect the makeup of your group according to the appropriate demographic profiles of gender, age, exp