system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
68% values are covered in how many Standard Detions (SD)?
assistant
The correct answer is  Normal / Gaussian curve:- Is 'bilaterally symmetrical, bell - shaped'. Mean, Median and Mode coincide. (Mean = Median = Mode) Has mean (u) = 0 and SD (s) = 1. 1) Mean +- 1SD (u +- 1s) covers 68% values. 2) Mean +- 2SD (u +- 2s) covers 95% values. 3) Mean +- 3SD (u +- 2s) covers 99% values.