Should parents buy cell phones for their children?

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

Performance on vocabulary words:
No of characters: 431.0 444.711560045 97% => OK
No of words: 112.0 116.580246914 96% => 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: 3.84821428571 3.81502700369 101% => OK
Fourth root words length: 3.2531531234 3.28032121604 99% => OK
Word Length SD: 1.75870194334 1.8723322822 94% => OK
Unique words: 81.0 76.076318743 106% => OK
Unique words percentage: 0.723214285714 0.655143326166 110% => OK
Syllable count: 135.9 141.574747475 96% => OK
Avg_syllables_per_word: 1.2 1.21358024691 99% => OK

Performance on coherence:
Topic speech coherence ratio: 0.0193162652601 0.0738818816272 26% => 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: 37.3333333333 60.3232687746 62% => OK
STD paragraph length: 25.4209012866 17.3634065801 146% => OK
Average paragraph duration: 15.2833333333 22.9064221017 67% => OK
STD paragraph duration: 8.22647082425 6.49597621602 127% => OK

Acoustic performance on sentences:
How many acoustic sentences: 32.0 31.1548821549 103% => OK
Average acoustic sentence length: 3.5 4.0588447711 86% => OK
STD acoustic sentence length: 3.41869858279 3.18357895611 107% => OK
Average acoustic sentences duration: 1.355625 1.46810986539 92% => OK
STD acoustic sentences duration: 1.10755343409 1.01537252472 109% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 34.0 28.6644219978 119% => It means the content is not pronounced smoothly or it is pronounced slowly. It is word by word.
Total acoustic silence duration: 7.13 5.28593714927 135% => It may have a lot of silences or every silence is too long.
Average acoustic silence duration: 0.209705882353 0.187982170178 112% => OK
STD acoustic silence duration: 0.154586455805 0.154715141812 100% => OK

Acoustic performance on acoustic words:
Total word duration: 36.04 35.408047138 102% => OK
Average word duration: 0.321785714286 0.306236595465 105% => OK
STD word duration: 0.198252248617 0.198589292138 100% => 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: 7.95 5.14435465769 155% => Somehow the hesitation is serious.
Total acoustic noise duration: 1.17 2.80480359147 42% => OK

Acoustic rates:
Total speech duration: 45.85 45.0716498316 102% => Need to finish the speech on time.
Compare to expected duration: 1.01888888889 1.00159221848 102% => OK
Rate of silence: 0.741548527808 0.637764685501 116% => OK
Rate of speech: 2.4427480916 2.58495923209 94% => OK
Rate of speech by unique words: 1.76663031625 1.68816559523 105% => OK
Rate of word duration by unique words: 2.24750277469 2.15290372801 104% => OK
Average articulation rates: 0.279927598214 0.343871460585 81% => OK

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Rates: 80.0 out of 100
Scores by speech e-grader: 24.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.