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Mean Likert scores to survey questions (5 = strongly agree; 1 = strongly disagree)
| Survey Item | Row/Column | Huffman | Linear | |||
|---|---|---|---|---|---|---|
| step | auto | 1-grm | 8-grm | grid | RSVP | |
| I was fatigued by the end of the trial | 3.1 | 1.9 | 3.3 | 1.9 | 1.9 | 2.8 |
| I was stressed by the end of the trial | 2.4 | 2.0 | 2.5 | 1.7 | 1.6 | 2.6 |
| I liked this trial | 2.1 | 3.5 | 2.6 | 3.9 | 3.8 | 2.9 |
| I was frustrated by this trial | 3.4 | 1.8 | 3.1 | 1.7 | 1.7 | 2.9 |
