Should parents buy cell phones for their children?

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

Performance on vocabulary words:
No of characters: 418.0 444.711560045 94% => OK
No of words: 111.0 116.580246914 95% => 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: 3.76576576577 3.81502700369 99% => OK
Fourth root words length: 3.24586718041 3.28032121604 99% => OK
Word Length SD: 1.74477317225 1.8723322822 93% => OK
Unique words: 78.0 76.076318743 103% => OK
Unique words percentage: 0.702702702703 0.655143326166 107% => OK
Syllable count: 121.5 141.574747475 86% => OK
Avg_syllables_per_word: 1.1 1.21358024691 91% => OK

Performance on coherence:
Topic speech coherence ratio: 0.0522676850986 0.0738818816272 71% => OK

Acoustic performance on paragraphs:
How many acoustic paragraphs: 9.0 3.20202020202 281% => Need less acoustic paragraphs.
Average paragraph length: 12.4444444444 60.3232687746 21% => The average paragraph length is low.
STD paragraph length: 9.53486131241 17.3634065801 55% => OK
Average paragraph duration: 6.77666666667 22.9064221017 30% => The speaking content is not well organized.
STD paragraph duration: 5.1942211479 6.49597621602 80% => OK

Acoustic performance on sentences:
How many acoustic sentences: 52.0 31.1548821549 167% => OK
Average acoustic sentence length: 2.13461538462 4.0588447711 53% => OK
STD acoustic sentence length: 1.77621947442 3.18357895611 56% => OK
Average acoustic sentences duration: 1.01173076923 1.46810986539 69% => OK
STD acoustic sentences duration: 0.70264807132 1.01537252472 69% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 56.0 28.6644219978 195% => It means the content is not pronounced smoothly or it is pronounced slowly. It is word by word.
Total acoustic silence duration: 12.14 5.28593714927 230% => It may have a lot of silences or every silence is too long.
Average acoustic silence duration: 0.216785714286 0.187982170178 115% => OK
STD acoustic silence duration: 0.214851336833 0.154715141812 139% => OK

Acoustic performance on acoustic words:
Total word duration: 41.17 35.408047138 116% => OK
Average word duration: 0.370900900901 0.306236595465 121% => OK
STD word duration: 0.226264413406 0.198589292138 114% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 17.0 6.3164983165 269% => It may have 'ehn' in the speaking, or it has hesitations or overlapping speeches.
Total_disfluencies_duration: 13.03 5.14435465769 253% => Somehow the hesitation is serious.
Total acoustic noise duration: 5.86 2.80480359147 209% => It may have issues on recording quality or have issues on silences or disfluencies.

Acoustic rates:
Total speech duration: 60.99 45.0716498316 135% => Need to finish the speech on time.
Compare to expected duration: 1.35533333333 1.00159221848 135% => It is over the expected time.
Rate of silence: 0.918183308739 0.637764685501 144% => Less acoustic silences wanted.
Rate of speech: 1.81997048697 2.58495923209 70% => Need to bring more content.
Rate of speech by unique words: 1.27889818003 1.68816559523 76% => More unique words wanted.
Rate of word duration by unique words: 1.89458343454 2.15290372801 88% => Need more unique words.
Average articulation rates: 0.378004540541 0.343871460585 110% => OK

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The speech is either too short or too long. It should be in 45 seconds.

Rates: 50.0 out of 100
Scores by speech e-grader: 15.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.