Which is a raw score that has been transformed into standard deviation units.
Which is a raw score that has been transformed into standard deviation units.
Answer:
A standard score or z-score is a raw score that has been transformed into standard deviation units.
A z-score measures the number of standard deviations a raw score is from the mean of its distribution. It is calculated by subtracting the mean of the distribution from the raw score and then dividing by the standard deviation:
z = (X - μ) / σ
where z is the z-score, X is the raw score, μ is the mean of the distribution, and σ is the standard deviation of the distribution.
By transforming raw scores into standard deviation units, z-scores allow for the comparison of scores from different distributions or variables that may have different scales or units of measurement. They are commonly used in statistics and research to standardize and compare scores across different populations or groups.