Should parents buy cell phones for their children?

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

Performance on vocabulary words:
No of characters: 404.0 444.711560045 91% => OK
No of words: 101.0 116.580246914 87% => 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: 4.0 3.81502700369 105% => OK
Fourth root words length: 3.17015387972 3.28032121604 97% => OK
Word Length SD: 2.02460117085 1.8723322822 108% => OK
Unique words: 68.0 76.076318743 89% => More unique words wanted.
Unique words percentage: 0.673267326733 0.655143326166 103% => OK
Syllable count: 130.5 141.574747475 92% => OK
Avg_syllables_per_word: 1.3 1.21358024691 107% => 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: 5.0 3.20202020202 156% => OK
Average paragraph length: 20.2 60.3232687746 33% => The average paragraph length is low.
STD paragraph length: 11.4786758818 17.3634065801 66% => OK
Average paragraph duration: 9.086 22.9064221017 40% => The speaking content is not well organized.
STD paragraph duration: 5.15863780469 6.49597621602 79% => OK

Acoustic performance on sentences:
How many acoustic sentences: 36.0 31.1548821549 116% => OK
Average acoustic sentence length: 2.80555555556 4.0588447711 69% => OK
STD acoustic sentence length: 2.73678079791 3.18357895611 86% => OK
Average acoustic sentences duration: 1.135 1.46810986539 77% => OK
STD acoustic sentences duration: 0.875066664127 1.01537252472 86% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 35.0 28.6644219978 122% => It means the content is not pronounced smoothly or it is pronounced slowly. It is word by word.
Total acoustic silence duration: 6.84 5.28593714927 129% => It may have a lot of silences or every silence is too long.
Average acoustic silence duration: 0.195428571429 0.187982170178 104% => OK
STD acoustic silence duration: 0.162557117121 0.154715141812 105% => OK

Acoustic performance on acoustic words:
Total word duration: 34.02 35.408047138 96% => OK
Average word duration: 0.336831683168 0.306236595465 110% => OK
STD word duration: 0.222514570412 0.198589292138 112% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 12.0 6.3164983165 190% => It may have 'ehn' in the speaking, or it has hesitations or overlapping speeches.
Total_disfluencies_duration: 9.24 5.14435465769 180% => Somehow the hesitation is serious.
Total acoustic noise duration: 3.14 2.80480359147 112% => OK

Acoustic rates:
Total speech duration: 45.43 45.0716498316 101% => OK
Compare to expected duration: 1.00955555556 1.00159221848 101% => OK
Rate of silence: 0.770416024653 0.637764685501 121% => Less acoustic silences wanted.
Rate of speech: 2.22320052829 2.58495923209 86% => Need to bring more content.
Rate of speech by unique words: 1.49680827647 1.68816559523 89% => More unique words wanted.
Rate of word duration by unique words: 1.99882422105 2.15290372801 93% => OK
Average articulation rates: 0.313099138614 0.343871460585 91% => OK

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Rates: 60.0 out of 100
Scores by speech e-grader: 18.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.