z-scores
... If IQ scores are normally distributed with = 100 and = 15, what is the probability of selecting one score from the population that is greater than 123? We would first convert the raw score to a z-score. The question becomes, what is the probability of achieving a z-score higher than +1.53. ...
... If IQ scores are normally distributed with = 100 and = 15, what is the probability of selecting one score from the population that is greater than 123? We would first convert the raw score to a z-score. The question becomes, what is the probability of achieving a z-score higher than +1.53. ...
