7.3.2 - Video Example: Middle 50% SATM

Question: SAT-Math scores are normally distributed with a mean of 500 and standard deviation of 100. Find the SAT-Math scores that separate the middle 50% of the distribution from the outer 50% of the distribution.

  1. On a PC: from the menu select STATISTICS > Distribution Plot
    On a Mac: from the menu select Statistics > Probability Distributions > Distribution Plot
  2. Select Display Probability 
  3. For Distribution select Normal
  4. For Mean enter 500
  5. For Standard deviation enter 100
  6. Select A specified probability
  7. Select Equal tails
  8. For Probability enter 0.50
Video Walkthrough