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Invert norm: find raw score, mean or standard deviation.
given % ------> Z-score
Opposite to Shade norm (shade norm finds the %)
Given Z - score ------> %
invert norm (0.84) = 84% -----> Z = .99
.99 is the Z score that cuts off the bottom 84%
Invert norm gives the Z score that gives % to the left of the Z score.
**** ASK % or PROBABILITY = SHADE NORM****
**** GIVES YOU % ASKING RAW SCORE = INVERT NORM****
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link to pdf version of notes
ReplyDeletehttps://www.edline.net/pages/Dauphin_Regional_CSS/Classes/0910_AMA40S_a/Pod/Stats/inv_norm_pdf_notes