Should parents buy cell phones for their children?

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

Performance on vocabulary words:
No of characters: 403.0 444.711560045 91% => OK
No of words: 103.0 116.580246914 88% => 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: 3.91262135922 3.81502700369 103% => OK
Fourth root words length: 3.18573250055 3.28032121604 97% => OK
Word Length SD: 1.9364004045 1.8723322822 103% => OK
Unique words: 71.0 76.076318743 93% => More unique words wanted.
Unique words percentage: 0.68932038835 0.655143326166 105% => OK
Syllable count: 123.3 141.574747475 87% => OK
Avg_syllables_per_word: 1.2 1.21358024691 99% => OK

Performance on coherence:
Topic speech coherence ratio: 0.0362334517879 0.0738818816272 49% => 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: 5.0 3.20202020202 156% => OK
Average paragraph length: 20.8 60.3232687746 34% => The average paragraph length is low.
STD paragraph length: 13.2875881935 17.3634065801 77% => OK
Average paragraph duration: 8.88 22.9064221017 39% => The speaking content is not well organized.
STD paragraph duration: 5.81632530039 6.49597621602 90% => OK

Acoustic performance on sentences:
How many acoustic sentences: 42.0 31.1548821549 135% => OK
Average acoustic sentence length: 2.45238095238 4.0588447711 60% => OK
STD acoustic sentence length: 2.74471250079 3.18357895611 86% => OK
Average acoustic sentences duration: 0.972619047619 1.46810986539 66% => OK
STD acoustic sentences duration: 0.683461287174 1.01537252472 67% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 44.0 28.6644219978 154% => It means the content is not pronounced smoothly or it is pronounced slowly. It is word by word.
Total acoustic silence duration: 7.41 5.28593714927 140% => It may have a lot of silences or every silence is too long.
Average acoustic silence duration: 0.168409090909 0.187982170178 90% => OK
STD acoustic silence duration: 0.123305665685 0.154715141812 80% => OK

Acoustic performance on acoustic words:
Total word duration: 32.71 35.408047138 92% => OK
Average word duration: 0.317572815534 0.306236595465 104% => OK
STD word duration: 0.18328960595 0.198589292138 92% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 10.0 6.3164983165 158% => It may have 'ehn' in the speaking, or it has hesitations or overlapping speeches.
Total_disfluencies_duration: 7.03 5.14435465769 137% => Somehow the hesitation is serious.
Total acoustic noise duration: 2.74 2.80480359147 98% => OK

Acoustic rates:
Total speech duration: 44.4 45.0716498316 99% => OK
Compare to expected duration: 0.986666666667 1.00159221848 99% => OK
Rate of silence: 0.990990990991 0.637764685501 155% => Less acoustic silences wanted.
Rate of speech: 2.31981981982 2.58495923209 90% => Need to bring more content.
Rate of speech by unique words: 1.5990990991 1.68816559523 95% => More unique words wanted.
Rate of word duration by unique words: 2.17059003363 2.15290372801 101% => OK
Average articulation rates: 0.27704715534 0.343871460585 81% => 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.