Power analysis calculations are a common request. A power analysis can help you determine an estimate of the minimum sample size needed to achieve significance, based on an anticipated effect size. Power analyses are often performed with G*Power, a free and open-source software.
A complete power-analysis is an in-depth process, requiring a meta-analysis of corresponding effect sizes, reliability of the dependent measures and the anticipated data. In addition, the project's research design must be fully developed, with specific planned mean comparisons or relationships, since the research design dictates the approach of statistical analysis.
For assistance with power analysis, request a consultation well in advance of your personal deadlines.