The two graphs show the main sources of energy in the USA in 1980s and the 1990s.
Write a report for a university lecturer describing the changes which occurred.
The pie charts compares the proportion of different types of power consumed by American in the 1980s and the 1990s.
In general, the main sources of energy underwent some significant changes over a ten-year period with the first rank belonging to oil and the last one for hydroelectric power.
The most dramatic alteration occurred in the oil consumption, from 42% to 33% in a decade. Despite the decline of almost 10%, it still took the first place in both charts. Ranking after oil, natural gas experienced a stable consumption, accounting for around a quarter of power supply. Regarding the last three kinds, hydroelectric power remained the same over the time frame whereas others both witnessed a moderate change. Coal, holding the third-popular source of energy, grew considerably from 22% to 27%, accounting for more than a quarter in the 1990s. Similarly, the percentage of nuclear power seen a minimal rise by 5%.
To sum up, while the two most common sources of energy dropped at different rate, the other three experienced a positive trend over 10 years.
Transition Words or Phrases used:
first, if, regarding, similarly, so, still, third, whereas, while, in general, to sum up
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 0.0 7.0 0% => More to be verbs wanted.
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 2.0 6.8 29% => More conjunction wanted.
Relative clauses : 0.0 3.15609756098 0% => OK
Pronoun: 1.0 5.60731707317 18% => OK
Preposition: 32.0 33.7804878049 95% => OK
Nominalization: 4.0 3.97073170732 101% => OK
Performance on vocabulary words:
No of characters: 898.0 965.302439024 93% => OK
No of words: 177.0 196.424390244 90% => More content wanted.
Chars per words: 5.07344632768 4.92477711251 103% => OK
Fourth root words length: 3.64748333727 3.73543355544 98% => OK
Word Length SD: 2.79122348311 2.65546596893 105% => OK
Unique words: 112.0 106.607317073 105% => OK
Unique words percentage: 0.632768361582 0.547539520022 116% => OK
syllable_count: 268.2 283.868780488 94% => OK
avg_syllables_per_word: 1.5 1.45097560976 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 1.53170731707 65% => OK
Article: 5.0 4.33902439024 115% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 5.0 3.36585365854 149% => OK
Performance on sentences:
How many sentences: 9.0 8.94146341463 101% => OK
Sentence length: 19.0 22.4926829268 84% => The Avg. Sentence Length is relatively short.
Sentence length SD: 31.7260651496 43.030603864 74% => OK
Chars per sentence: 99.7777777778 112.824112599 88% => OK
Words per sentence: 19.6666666667 22.9334400587 86% => OK
Discourse Markers: 9.77777777778 5.23603664747 187% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
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: 5.0 4.09268292683 122% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.149353082428 0.215688989381 69% => OK
Sentence topic coherence: 0.052973846401 0.103423049105 51% => OK
Sentence topic coherence SD: 0.0483566540645 0.0843802449381 57% => OK
Paragraph topic coherence: 0.0939575843328 0.15604864568 60% => OK
Paragraph topic coherence SD: 0.0305581296901 0.0819641961636 37% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 12.3 13.2329268293 93% => Automated_readability_index is low.
flesch_reading_ease: 60.65 61.2550243902 99% => OK
smog_index: 8.8 6.51609756098 135% => OK
flesch_kincaid_grade: 9.5 10.3012195122 92% => OK
coleman_liau_index: 12.13 11.4140731707 106% => OK
dale_chall_readability_score: 8.5 8.06136585366 105% => OK
difficult_words: 44.0 40.7170731707 108% => OK
linsear_write_formula: 8.0 11.4329268293 70% => OK
gunning_fog: 9.6 10.9970731707 87% => OK
text_standard: 9.0 11.0658536585 81% => OK
What are above readability scores?
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Rates: 78.6516853933 out of 100
Scores by essay e-grader: 7.0 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.