Predicted samples size with power analysis.
I developed this easy sample size calculator to simplify power analyses. It assumes standard settings of 95 % significance level and 80 % power.
Just enter MEAN, SEM, and N-NUMBER for CONTROL and TEST groups from a similar previous study. The calculator will tell you the required n-number you would need based on the difference and deviation.
If you use this calculator to help inform your experiments, please reference it as: https://nicneuro.net/easy-sample-size-calculator/