TOEFL integrated writing: Chaco housing

The article states that Chaco Canyon in New Mexico was notable for their great houses and provides three reasons theories of support. However the professor explains that none of theories were convincing and refutes each of the author’s reasons.
First, the reading claims that Chaco structures were purely residential, with each housing hundreds of people. The professor refutes this point by saying that the building looks like Native American apartment from outside but inside there are not enough rooms for hundreds of people to live and only few fire places have been found. He also states that many fires places aren’t placed inside which is used for cooking purposes.
Second, the article posits that Chaco structures were used to store food supplies. However, the professor says that if they contain big containers to store maize why spilled maize found on the ground.

Third, the reading says that houses were used as ceremonial centers. People gathered at Pueblo Alto for ceremonies and they ate festive meals and then discarded the pots in which the meals have been prepared or served. The professor opposes this point by explaining that Pueblo Alto contains heap of trash from construction material which are not expected to be used for ceremonies.

Votes
Average: 8.1 (1 vote)
Essay Categories

Grammar and spelling errors:
Line 1, column 136, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: However,
...ides three reasons theories of support. However the professor explains that none of the...
^^^^^^^

Transition Words or Phrases used:
also, but, first, however, if, look, second, so, then, third

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

Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 0.0 5.04856512141 0% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 15.0 22.412803532 67% => OK
Preposition: 23.0 30.3222958057 76% => OK
Nominalization: 2.0 5.01324503311 40% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.

Performance on vocabulary words:
No of characters: 1073.0 1373.03311258 78% => OK
No of words: 205.0 270.72406181 76% => More content wanted.
Chars per words: 5.23414634146 5.08290768461 103% => OK
Fourth root words length: 3.78388967377 4.04702891845 93% => OK
Word Length SD: 2.3852411559 2.5805825403 92% => OK
Unique words: 128.0 145.348785872 88% => More unique words wanted.
Unique words percentage: 0.624390243902 0.540411800872 116% => OK
syllable_count: 322.2 419.366225166 77% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.

Performance on sentences:
How many sentences: 10.0 13.0662251656 77% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 41.7828912355 49.2860985944 85% => OK
Chars per sentence: 107.3 110.228320801 97% => OK
Words per sentence: 20.5 21.698381199 94% => OK
Discourse Markers: 6.0 7.06452816374 85% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 4.19205298013 24% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 1.0 4.45695364238 22% => More negative sentences wanted.
Sentences with neutral sentiment: 6.0 4.27373068433 140% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.0890268698711 0.272083759551 33% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0436543480882 0.0996497079465 44% => OK
Sentence topic coherence SD: 0.0563259214855 0.0662205650399 85% => OK
Paragraph topic coherence: 0.0570288864807 0.162205337803 35% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0230615577513 0.0443174109184 52% => OK

Essay readability:
automated_readability_index: 13.5 13.3589403974 101% => OK
flesch_reading_ease: 51.18 53.8541721854 95% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 13.05 12.2367328918 107% => OK
dale_chall_readability_score: 8.86 8.42419426049 105% => OK
difficult_words: 55.0 63.6247240618 86% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?

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Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.