Should parents buy cell phones for their children?

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

Performance on vocabulary words:
No of characters: 498.0 444.711560045 112% => OK
No of words: 117.0 116.580246914 100% => OK
Chars per words: 4.25641025641 3.81502700369 112% => OK
Fourth root words length: 3.28886816799 3.28032121604 100% => OK
Word Length SD: 2.39712736257 1.8723322822 128% => OK
Unique words: 84.0 76.076318743 110% => OK
Unique words percentage: 0.717948717949 0.655143326166 110% => OK
Syllable count: 155.7 141.574747475 110% => OK
Avg_syllables_per_word: 1.3 1.21358024691 107% => OK

Performance on coherence:
Topic speech coherence ratio: 0.0212645938359 0.0738818816272 29% => 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: 1.0 3.20202020202 31% => OK
Average paragraph length: 117.0 60.3232687746 194% => OK
STD paragraph length: 0.0 17.3634065801 0% => OK
Average paragraph duration: 46.59 22.9064221017 203% => 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: 32.0 31.1548821549 103% => OK
Average acoustic sentence length: 3.65625 4.0588447711 90% => OK
STD acoustic sentence length: 2.41879844913 3.18357895611 76% => OK
Average acoustic sentences duration: 1.3984375 1.46810986539 95% => OK
STD acoustic sentences duration: 0.93541471209 1.01537252472 92% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 30.0 28.6644219978 105% => OK
Total acoustic silence duration: 5.64 5.28593714927 107% => OK
Average acoustic silence duration: 0.188 0.187982170178 100% => OK
STD acoustic silence duration: 0.150696162305 0.154715141812 97% => OK

Acoustic performance on acoustic words:
Total word duration: 37.58 35.408047138 106% => OK
Average word duration: 0.321196581197 0.306236595465 105% => OK
STD word duration: 0.21300520596 0.198589292138 107% => OK

Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 11.0 6.3164983165 174% => It may have 'ehn' in the speaking, or it has hesitations or overlapping speeches.
Total_disfluencies_duration: 8.88 5.14435465769 173% => Somehow the hesitation is serious.
Total acoustic noise duration: 1.83 2.80480359147 65% => OK

Acoustic rates:
Total speech duration: 46.59 45.0716498316 103% => Need to finish the speech on time.
Compare to expected duration: 1.03533333333 1.00159221848 103% => OK
Rate of silence: 0.64391500322 0.637764685501 101% => OK
Rate of speech: 2.51126851256 2.58495923209 97% => OK
Rate of speech by unique words: 1.80296200901 1.68816559523 107% => OK
Rate of word duration by unique words: 2.23523150612 2.15290372801 104% => OK
Average articulation rates: 0.245895683761 0.343871460585 72% => OK

---------------------
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
---------------------
Note: the speech e-grader does NOT examine the meaning of words and ideas.