Should parents buy cell phones for their children?

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

Performance on vocabulary words:
No of characters: 489.0 444.711560045 110% => OK
No of words: 114.0 116.580246914 98% => 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: 4.28947368421 3.81502700369 112% => OK
Fourth root words length: 3.26757987692 3.28032121604 100% => OK
Word Length SD: 2.26229073554 1.8723322822 121% => OK
Unique words: 81.0 76.076318743 106% => OK
Unique words percentage: 0.710526315789 0.655143326166 108% => OK
Syllable count: 154.8 141.574747475 109% => OK
Avg_syllables_per_word: 1.4 1.21358024691 115% => OK

Performance on coherence:
Topic speech coherence ratio: 0.0392250449634 0.0738818816272 53% => OK

Acoustic performance on paragraphs:
How many acoustic paragraphs: 1.0 3.20202020202 31% => OK
Average paragraph length: 114.0 60.3232687746 189% => OK
STD paragraph length: 0.0 17.3634065801 0% => OK
Average paragraph duration: 46.89 22.9064221017 205% => Need to control the rhythm of the speech
STD paragraph duration: 0.0 6.49597621602 0% => The duration of acoustic paragraphs keeps same.

Acoustic performance on sentences:
How many acoustic sentences: 28.0 31.1548821549 90% => OK
Average acoustic sentence length: 4.07142857143 4.0588447711 100% => OK
STD acoustic sentence length: 3.75051016938 3.18357895611 118% => OK
Average acoustic sentences duration: 1.63964285714 1.46810986539 112% => OK
STD acoustic sentences duration: 1.12721997518 1.01537252472 111% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 26.0 28.6644219978 91% => OK
Total acoustic silence duration: 7.45 5.28593714927 141% => It may have a lot of silences or every silence is too long.
Average acoustic silence duration: 0.286538461538 0.187982170178 152% => Maybe the pauses are too long.
STD acoustic silence duration: 0.232195910447 0.154715141812 150% => The duration of acoustic silence changes often. It may have hesitations.

Acoustic performance on acoustic words:
Total word duration: 36.99 35.408047138 104% => OK
Average word duration: 0.324473684211 0.306236595465 106% => OK
STD word duration: 0.17873871995 0.198589292138 90% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 5.0 6.3164983165 79% => OK
Total_disfluencies_duration: 4.0 5.14435465769 78% => OK
Total acoustic noise duration: 0.97 2.80480359147 35% => OK

Acoustic rates:
Total speech duration: 46.89 45.0716498316 104% => Need to finish the speech on time.
Compare to expected duration: 1.042 1.00159221848 104% => OK
Rate of silence: 0.554489230113 0.637764685501 87% => OK
Rate of speech: 2.43122200896 2.58495923209 94% => OK
Rate of speech by unique words: 1.72744721689 1.68816559523 102% => OK
Rate of word duration by unique words: 2.1897810219 2.15290372801 102% => OK
Average articulation rates: 0.282969491228 0.343871460585 82% => OK

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Maybe the speech is too long. It should be in 45 seconds.

Rates: 66.6666666667 out of 100
Scores by speech e-grader: 20.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.