Which of the following technological developments has made the greatest impact on students lives 1 Electronic books 2 Online classes 3 Smart phones

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

Performance on vocabulary words:
No of characters: 371.0 444.711560045 83% => Need more words or more difficult words.
No of words: 108.0 116.580246914 93% => 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: 3.43518518519 3.81502700369 90% => OK
Fourth root words length: 3.22370979547 3.28032121604 98% => OK
Word Length SD: 1.66818346617 1.8723322822 89% => OK
Unique words: 73.0 76.076318743 96% => OK
Unique words percentage: 0.675925925926 0.655143326166 103% => 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: 0.0224893318592 0.0738818816272 30% => 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: 108.0 60.3232687746 179% => OK
STD paragraph length: 0.0 17.3634065801 0% => OK
Average paragraph duration: 44.42 22.9064221017 194% => OK
STD paragraph duration: 0.0 6.49597621602 0% => The duration of acoustic paragraphs keeps same.

Acoustic performance on sentences:
How many acoustic sentences: 39.0 31.1548821549 125% => OK
Average acoustic sentence length: 2.76923076923 4.0588447711 68% => OK
STD acoustic sentence length: 2.5666653859 3.18357895611 81% => OK
Average acoustic sentences duration: 1.12820512821 1.46810986539 77% => OK
STD acoustic sentences duration: 0.895406716912 1.01537252472 88% => OK

Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 39.0 28.6644219978 136% => It means the content is not pronounced smoothly or it is pronounced slowly. It is word by word.
Total acoustic silence duration: 7.73 5.28593714927 146% => It may have a lot of silences or every silence is too long.
Average acoustic silence duration: 0.198205128205 0.187982170178 105% => OK
STD acoustic silence duration: 0.191135229278 0.154715141812 124% => OK

Acoustic performance on acoustic words:
Total word duration: 34.8 35.408047138 98% => OK
Average word duration: 0.322222222222 0.306236595465 105% => OK
STD word duration: 0.194923220085 0.198589292138 98% => 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: 7.81 5.14435465769 152% => Somehow the hesitation is serious.
Total acoustic noise duration: 0.41 2.80480359147 15% => Good job. The lower, the better.

Acoustic rates:
Total speech duration: 44.42 45.0716498316 99% => OK
Compare to expected duration: 0.987111111111 1.00159221848 99% => OK
Rate of silence: 0.87798289059 0.637764685501 138% => Less acoustic silences wanted.
Rate of speech: 2.43133723548 2.58495923209 94% => OK
Rate of speech by unique words: 1.64340387213 1.68816559523 97% => OK
Rate of word duration by unique words: 2.09770114943 2.15290372801 97% => OK
Average articulation rates: 0.359079185185 0.343871460585 104% => OK

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Rates: 70.0 out of 100
Scores by speech e-grader: 21.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.