Which of the following functions of smart phones most beneficial to students? (1) taking photos (2) listening to the music (3) recording lectures

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on vocabulary words:
No of characters: 354.0 444.711560045 80% => Need more words or more difficult words.
No of words: 87.0 116.580246914 75% => More words wanted. You may: choose simpler words or speak faster or remove hesitations or remove long pauses, and fully use the time, do NOT save one or two seconds.
Chars per words: 4.06896551724 3.81502700369 107% => OK
Fourth root words length: 3.05407580998 3.28032121604 93% => OK
Word Length SD: 2.08879387432 1.8723322822 112% => OK
Unique words: 65.0 76.076318743 85% => More unique words wanted.
Unique words percentage: 0.747126436782 0.655143326166 114% => OK
Syllable count: 105.3 141.574747475 74% => The syllable count is low.
Avg_syllables_per_word: 1.2 1.21358024691 99% => OK

Performance on coherence:
Topic speech coherence ratio: 0.0490981425681 0.0738818816272 66% => OK

Acoustic performance on paragraphs:
How many acoustic paragraphs: 9.0 3.20202020202 281% => Need less acoustic paragraphs.
Average paragraph length: 9.77777777778 60.3232687746 16% => The average paragraph length is low.
STD paragraph length: 9.97527808332 17.3634065801 57% => OK
Average paragraph duration: 4.38 22.9064221017 19% => The speaking content is not well organized.
STD paragraph duration: 3.63105739114 6.49597621602 56% => OK

Acoustic performance on sentences:
How many acoustic sentences: 26.0 31.1548821549 83% => OK
Average acoustic sentence length: 3.34615384615 4.0588447711 82% => OK
STD acoustic sentence length: 2.44858369883 3.18357895611 77% => OK
Average acoustic sentences duration: 1.30884615385 1.46810986539 89% => OK
STD acoustic sentences duration: 0.780208684722 1.01537252472 77% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 24.0 28.6644219978 84% => OK
Total acoustic silence duration: 4.5 5.28593714927 85% => OK
Average acoustic silence duration: 0.1875 0.187982170178 100% => OK
STD acoustic silence duration: 0.111364641307 0.154715141812 72% => OK

Acoustic performance on acoustic words:
Total word duration: 29.56 35.408047138 83% => Need to talk more.
Average word duration: 0.339770114943 0.306236595465 111% => OK
STD word duration: 0.178776023821 0.198589292138 90% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 6.0 6.3164983165 95% => OK
Total_disfluencies_duration: 4.95 5.14435465769 96% => OK
Total acoustic noise duration: 4.16 2.80480359147 148% => It may have issues on recording quality or have issues on silences or disfluencies.

Acoustic rates:
Total speech duration: 39.42 45.0716498316 87% => Talk more. Do not save time. People can talk 4-5 words in one second.
Compare to expected duration: 0.876 1.00159221848 87% => Some seconds left. Need to talk more.
Rate of silence: 0.608828006088 0.637764685501 95% => OK
Rate of speech: 2.20700152207 2.58495923209 85% => Need to bring more content.
Rate of speech by unique words: 1.64890918316 1.68816559523 98% => OK
Rate of word duration by unique words: 2.19891745602 2.15290372801 102% => OK
Average articulation rates: 0.378079022989 0.343871460585 110% => OK

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Rates: 56.6666666667 out of 100
Scores by speech e-grader: 17.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.