Psych Statistics Exam 1 // CH. 3

TRUE.

A negative z-score always indicates a location below the mean.

FALSE. It would be closer to 0.

A score close to the mean has a z-score close to 1.00.

Above the mean (center, 0) by 1 standard deviation.

A z-score of z= +1.00 indicates a position in a distribution...

Adding 50% to a score:

Add when looking for the % of scores BELOW A POSITIVE z-score, or ABOVE A NEGATIVE z-score.

When determining the LOWEST score someone would need to be in a certain percentile (ex. 30%)...

Look up "% in tail" for the percentile on the given chart. Take that new z-score and calculate x=(z)(SD)+M.

Farther away from the mean (0).

When comparing two scores turned from raw --> z-scores, you would determine the better score to be...

raw score ---> z-score formula

X-M/SD