Question

1 multiple choice 10 points when comparing sat scores that are normally distributed across different high schools with different numbers of test - takers, why would we use z - scores instead of raw scores? using raw scores provides more accurate comparisons regardless of how many test takers there are in each school. to determine which high school has more students scoring above or below average without considering variability. because raw scores do not give any information about student performance on their respective exams. to compare individual scores in relation to their groups average performance while accounting for variability within each group.

Explanation:

Z - scores standardize data by taking into account the mean and standard - deviation of each group. This allows for a comparison of individual scores relative to their group's average while accounting for variability within each group. Raw scores do not consider the distribution characteristics of each group.

Answer:

To compare individual scores in relation to their group's average performance while accounting for variability within each group.