i have a SAMPLE of a set of numbers 12, 32, 15, 96, 53, 45, 33, 19, 82, 27, 55 where i found the mean is 42.6 and the standard deviation is 27.2. i am to find the z score (associated with X=42), which i found is -0.02, and find the actual score (associated with z=-2.4), which i cannot find. i don't understand how to find the actual score. help would be soooo appreciated! thanks!
Find z score and actual score?
Formula for getting a z-score is: z = (raw score - mean)/standard deviation.
And to get the raw score, change the subject, thus: X = (standard dev x z score) + mean. In words, multiply the standard deviation by the z score and then add the mean.
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