This purpose of this task is to calculate and interpret percentile ranks and Z scores, and converting Z scores to percentile ranks. This task also demonstrates that Z score-to-percentile rank conversions can be performed only when the raw score distribution is normal or nearly normal. You will discover, the percentile ranks students calculate using the formula shown below, will differ from the percentile ranks yielded by Part I of Appendix 1, which converts Z scores to percentile ranks, because the UAT scores are not normally distributed. Use the table to complete the following: Convert examinees' raw scores to Z scores, using the formula, equation Fill in the percentile ranks calculated previously using the formula, equation Use Part I of Appendix 1 to find the percentile rank corresponding to each Z score. Compare the percentile ranks and discuss differences