The two graphs show the main sources of energy in the USA in the 1980s and the 1990s.
Write a report for a university lecturer describing the changes which occurred.
The pie charts illustrate the changes in the percentage of 5 major sources of energy (oil, natural gas, coal, hydroelectric power and nuclear power) in the USA in the 1980s and the 1990s.
In general, the Americans harnessed the most of three fossil energy sources: oil, natural gas and coal, while the hydroelectric power was used the least.
According to two pie charts, there was a significant drop in the oil consumption by 9% from 42% in 1980 to 33% in 1990, and a slight reduction of the natural gas by 1% from 26% in 1980 downed to 25% in 1990. Contrary to an upward trend of coal and nuclear power, which similarly increased by 5% from 22% to 27% and from 5% to 10% during the 10 years period respectively. Meanwhile, only the percentage of the hydroelectric power still remained the same proportion of 5% over the researching time.
Transition Words or Phrases used:
if, similarly, so, still, while, in general
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 2.0 7.0 29% => More to be verbs wanted.
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 6.0 6.8 88% => OK
Relative clauses : 1.0 3.15609756098 32% => OK
Pronoun: 0.0 5.60731707317 0% => OK
Preposition: 31.0 33.7804878049 92% => OK
Nominalization: 3.0 3.97073170732 76% => OK
Performance on vocabulary words:
No of characters: 696.0 965.302439024 72% => OK
No of words: 150.0 196.424390244 76% => More content wanted.
Chars per words: 4.64 4.92477711251 94% => OK
Fourth root words length: 3.49963551158 3.73543355544 94% => OK
Word Length SD: 2.76470613267 2.65546596893 104% => OK
Unique words: 86.0 106.607317073 81% => More unique words wanted.
Unique words percentage: 0.573333333333 0.547539520022 105% => OK
syllable_count: 195.3 283.868780488 69% => OK
avg_syllables_per_word: 1.3 1.45097560976 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 0.0 1.53170731707 0% => OK
Article: 2.0 4.33902439024 46% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 1.0 0.482926829268 207% => Less conjunction wanted as sentence beginning.
Preposition: 2.0 3.36585365854 59% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 5.0 8.94146341463 56% => 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: 30.0 22.4926829268 133% => The Avg. Sentence Length is relatively long.
Sentence length SD: 27.9542483354 43.030603864 65% => OK
Chars per sentence: 139.2 112.824112599 123% => OK
Words per sentence: 30.0 22.9334400587 131% => OK
Discourse Markers: 8.6 5.23603664747 164% => OK
Paragraphs: 3.0 3.83414634146 78% => More paragraphs wanted.
Language errors: 0.0 1.69756097561 0% => OK
Sentences with positive sentiment : 4.0 3.70975609756 108% => OK
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 1.0 4.09268292683 24% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0944660721937 0.215688989381 44% => OK
Sentence topic coherence: 0.0521160121634 0.103423049105 50% => OK
Sentence topic coherence SD: 0.0669177498241 0.0843802449381 79% => OK
Paragraph topic coherence: 0.0805641303715 0.15604864568 52% => OK
Paragraph topic coherence SD: 0.0734459915883 0.0819641961636 90% => OK
Essay readability:
automated_readability_index: 15.4 13.2329268293 116% => OK
flesch_reading_ease: 66.41 61.2550243902 108% => OK
smog_index: 8.8 6.51609756098 135% => OK
flesch_kincaid_grade: 11.5 10.3012195122 112% => OK
coleman_liau_index: 10.22 11.4140731707 90% => OK
dale_chall_readability_score: 8.18 8.06136585366 101% => OK
difficult_words: 29.0 40.7170731707 71% => More difficult words wanted.
linsear_write_formula: 18.0 11.4329268293 157% => OK
gunning_fog: 14.0 10.9970731707 127% => OK
text_standard: 9.0 11.0658536585 81% => OK
What are above readability scores?
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More content wanted.
Rates: 61.797752809 out of 100
Scores by essay e-grader: 5.5 Out of 9
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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.