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StatsToDo: Sample Size to Estimate the Standard Deviation

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Explanations and References Sample Size Table Javascript Program
Sample Size

   
  Each row a calculation
  Data in 2 columns
    - Col 1 = % confidence
    - Col 2 = width of interval as percent of SD found
    - e.g.: 95 10 means 95% CI = ±10% of SD found
Confidence Interval

   
  Each row a calculation
  Data in 2 columns
    - Col 1 = % confidence
    - Col 2 = sample size of data
    - e.g.: 95 270 means 95% CI ±proportion of SD) with sample size of 270
R Codes