Hi

Could someone please explain in simple words, what is the Difference between Percentile and T-Score, and how should one decide about where to use which one ? Is there some proper explanation available somewhere, which would tell about the PRACTICAL USER CASE SCENARIOS, like use T-Score in such and such situation and use Percentile Scores in such situation, and so on. Please share such links.

Please see the attached snaps for reference.

Where can I find the exact corresponding values, so that I can do a Direct Comparison between the Percentile Values and the T Score Values ? Like, if I want to know the T Score value, which would represent the Percentile Value of 30 or 75, then how do I find that ?

I have to use them within Excel Sheet for doing some scoring, but I am getting confused regarding which particular method should I use.

Thanks

T-Scores (and z-scores) tell you how your results compare to the results of other tests. To calculate a T-Score, you take your z-score and multiply by 10 and ad 50. To calculate your z-score, you take your raw score minus the mean and divide by the standard deviation. For example, T-Score = (Your raw scores - Average scores) / Standard Deviation * 10 + 50

I hope that helps!