* To calculate z-scores and areas under the normal curve, try out these online z-score and normal distribution calculators
*https://www.socscistatistics.com/tests/ztest/zscorecalculator.aspx
* https://www.calculator.net/z-score-calculator.html
*https://www.mathportal.org/calculators/statistics-calculator/z-score-calculator.php
* (This one is great because it will show you the hand calculations required to get the probabilities associated with different z-scores)
Try these recommended videos:
* Statistics 101: A Tour of the Normal Distribution – Brandon Foltz ( https://www.youtube.com/watch?v=772_n15Ke9Q )
* IQ score distribution – Intro to Psychology – Udacity ( https://www.youtube.com/watch?v=7HRmfIEWtyo)
* Normal Distribution, Why is it “Normal”? https://www.youtube.com/watch?v=nyibbuGFsr8
* Computing Variability with SPSS – Standard Deviation, Variance,