# One cannot reasonably do z transformations on ratio data

? Question 1 10 out of 10 points

One cannot reasonably do z transformations on ratio data.

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? Question 2 0 out of 10 points

If the original raw score distribution is not normally distributed, the mean of the z transformation scores of the raw data will not equal 0.

? Question 3 10 out of 10 points

In a normal curve, the area contained between the mean and a score that is 2.30 standard deviations above the mean is 0.4893 of the total area.

? Question 4 0 out of 10 points

For any z distribution of normally distributed scores, P50 is always equal to zero.

? Question 5 10 out of 10 points

If the original raw score distribution has a mean that is not equal to zero, the mean of the z transformed scores will not equal zero either.

? Question 6 0 out of 10 points

The area under the normal curve represents the proportion of scores that are contained in the area.

? Question 7 0 out of 10 points

A z transformation will allow comparisons to be made when units of distributions are different.

? Question 8 0 out of 10 points

z scores allow comparison of variables that are measured on different scales.

? Question 9 0 out of 10 points

A raw score that is 1 standard deviation above the mean of the raw score distribution will have a z score of 1.

? Question 10 10 out of 10 points

A z distribution always is normally shaped.