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: 377.0 444.711560045 85% => Need more words or more difficult words.
No of words: 100.0 116.580246914 86% => 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: 3.77 3.81502700369 99% => OK
Fourth root words length: 3.16227766017 3.28032121604 96% => OK
Word Length SD: 1.67245328784 1.8723322822 89% => OK
Unique words: 71.0 76.076318743 93% => More unique words wanted.
Unique words percentage: 0.71 0.655143326166 108% => OK
Syllable count: 114.3 141.574747475 81% => OK
Avg_syllables_per_word: 1.1 1.21358024691 91% => OK

Performance on coherence:
Topic speech coherence ratio: 0.0 0.0738818816272 0% => It may have issues on recording quality or the content is not so closely related to content.

Acoustic performance on paragraphs:
How many acoustic paragraphs: 3.0 3.20202020202 94% => OK
Average paragraph length: 33.3333333333 60.3232687746 55% => OK
STD paragraph length: 32.6019767635 17.3634065801 188% => OK
Average paragraph duration: 14.7466666667 22.9064221017 64% => OK
STD paragraph duration: 13.0901905597 6.49597621602 202% => The duration of acoustic paragraphs changes often.

Acoustic performance on sentences:
How many acoustic sentences: 40.0 31.1548821549 128% => OK
Average acoustic sentence length: 2.5 4.0588447711 62% => OK
STD acoustic sentence length: 1.98746069144 3.18357895611 62% => OK
Average acoustic sentences duration: 1.0795 1.46810986539 74% => OK
STD acoustic sentences duration: 0.707428264915 1.01537252472 70% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 38.0 28.6644219978 133% => It means the content is not pronounced smoothly or it is pronounced slowly. It is word by word.
Total acoustic silence duration: 8.56 5.28593714927 162% => It may have a lot of silences or every silence is too long.
Average acoustic silence duration: 0.225263157895 0.187982170178 120% => OK
STD acoustic silence duration: 0.312736115785 0.154715141812 202% => The duration of acoustic silence changes often. It may have hesitations.

Acoustic performance on acoustic words:
Total word duration: 32.95 35.408047138 93% => OK
Average word duration: 0.3295 0.306236595465 108% => OK
STD word duration: 0.183004781358 0.198589292138 92% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 8.0 6.3164983165 127% => It may have 'ehn' in the speaking, or it has hesitations or overlapping speeches.
Total_disfluencies_duration: 6.02 5.14435465769 117% => OK
Total acoustic noise duration: 1.32 2.80480359147 47% => OK

Acoustic rates:
Total speech duration: 44.24 45.0716498316 98% => OK
Compare to expected duration: 0.983111111111 1.00159221848 98% => OK
Rate of silence: 0.858951175407 0.637764685501 135% => Less acoustic silences wanted.
Rate of speech: 2.26039783002 2.58495923209 87% => Need to bring more content.
Rate of speech by unique words: 1.60488245931 1.68816559523 95% => OK
Rate of word duration by unique words: 2.15477996965 2.15290372801 100% => OK
Average articulation rates: 0.30258407 0.343871460585 88% => OK

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Rates: 70.0 out of 100
Scores by speech e-grader: 21.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.