| Mini-Disc Encode / Decode* vs. Source | Result | Correct | p less than | Listeners | 
|---|---|---|---|---|
| Music | ![]()  | 
118 / 213 = 55% | 0.066 | 15 | 
| Multi-Frequency Test Signal (1075 + N * 750) | ![]()  | 
14 / 14 = 100% | 0.0005 | 14 | 
| *Mini-Disc Encode/Decode was done with Sony's demonstration hardware for Mini-Disc mastering. | 
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The different symbol means it is unlikely the percent correct score occurred by chance and thus the null hypothesis was disproven, which substantiates a real difference in sound quality. | 
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The same symbol means that it is likely the correct score occurred by chance, the null hypothesis is not rejected, which means no difference was found. It does remain possible a difference may be substantianted with further testing. |