title: What’s the difference between sx and σx in the statistics calculations on a TI-Nspire?
body: <p>I know that sx is the standard deviation of a sample and σx is the standard deviation of a population. My question is, does the TI-Nspire think that the data I entered is a sample or the population? If it think’s (A) my data is a sample, how is σx calculated? If it thinks (B) my data is the population, how is it taking a “sample”?</p>
  
  <p>I think (A) makes sense and the calculator is somehow estimating a population standard deviation (σx) through some normal distribution approximation.</p>
  
  <p>Possibly ...
  <a href="https://en.wikipedia.org/wiki/Unbiased_estimation_of_standard_deviation" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Unbiased_estimation_of_standard_deviation</a></p>
  
  <p>However, I can’t find any reference to confirm this and I want to be sure.</p>
  
  <p>Note: Actually using the TI-Nspire CX CAS.</p>