Transforming Scores Changing the scale of the data in some way. Change each score.

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Presentation transcript:

Transforming Scores Changing the scale of the data in some way. Change each score.

converting cm. to inches comparing values on different scales (e.g., height and weight) percentiles

Percentiles: converting data into the % of people at or below a particular level.

Example: Class A: score of 80 Class B: score of 55

Class A

Class B:

Class Acf

Class Acf

Class Acf

Class B:cf

Class B:cf

Class B:cf

Z score: transforms raw data into distance from the mean in units of standard deviation

Your score was 80 in a class with a mean of 79 and a standard deviation of 4.