Finding Exact z Score Values Using an Applet, Table, or Statlets. Computer Project 13 Using Statlets to find normal curve tail areas. Computer Project 14 Using Statlets to find normal curve critical values. Finding Raw Scores Learn to convert a z score to a raw score. Transformation Rules Learn how to calculate means and standard deviations if data are simply transformed.
Z scores are very important position measures.
Z scores use standard deviations that you learned to calculate in Chapter 5 in their formula. You will need to pay particular attention to the calculation and understanding of z scores. Z scores tell how many standard deviations away from the mean a score resides. Z scores can be positive or negative. A positive z score indicates that the value is above the mean.