<p>basically Stats is like advanced "learning how to use ur Ti-83."</p>
<p>but does anyone know if I should learn those commands? they seem useless</p>
<p>I'm taking AP Stats using "The Practice of Statistics" this year.</p>
<p>From what I'm seeing so far, using those calculator commands isn't mandatory, but it's a real time saver.</p>
<p>Think about it... On a normal distribution, would you rather convert a score into a z-score by hand, then look it up in Table A to find the proportion, or would you rather learn to do it in normalcdf( and InvNorm( in just a few simple strokes? I'm going with the latter.</p>