① Calculation of interval growth rate
In 2018, my country’s total electricity consumption was 6,844.9 billion kilowatt-hours, a year-on-year increase of 8.5%, and the growth rate increased by 1.9 percentage points year-on-year. Specifically, the primary industry consumed 72.8 billion kWh of electricity, a year-on-year increase of 9.8; the secondary industry consumed 4,723.5 billion kWh of electricity, a year-on-year increase of 7.2; the tertiary industry consumed 1,080.1 billion kWh, a year-on-year increase of 12.7; urban and rural areas Residential electricity consumption was 968.5 billion kilowatt-hours, a year-on-year increase of 10.4. In 2018, my country's renewable energy power generation reached 1.87 trillion kilowatt-hours, a year-on-year increase of approximately 170 billion kilowatt-hours; the proportion of renewable energy power generation in the total annual power generation It was 26.7, a year-on-year increase of 0.2 percentage points.
Example 1 (Guangdong, 2019) In 2018, the electricity consumption of my country's entire society increased by about ( ) compared with 2016.
A.13.7
B.15.7
C.17.9
D.19.9
Answer B
Example 2 (2019 Shandong) Although the growth rate of the number of beds in medical and health institutions across the country continued to decline from 2014 to 2016, the number of beds in 2016 still increased compared with 2014:
A.12.26
B.10.87
C.13.21
D.9.69
Answer A
② Interval base period volume Calculation
In the first quarter of 2018, my country's aquatic product imports and exports were 1.9267 million tons, a year-on-year decrease of 7.27%, and the growth rate was 21.97 percentage points lower than the same period last year; the total import and export volume was US$7.715 billion, a year-on-year increase of 10.84%. The trade surplus was US$1.966 billion, a year-on-year decrease of US$215 million. In terms of exports, in the first quarter of 2018, my country's aquatic product export volume was 980,400 tons, a year-on-year decrease of 2.7%, and the export value was US$4.841 billion, an increase of 5.90%. The general trade export volume was 711,800 tons, a year-on-year decrease of 4.06%; the export value was US$3.671 billion, a year-on-year increase of 6.22%.
Example 3 (2019 Gansu) my country’s total aquatic product import and export volume in the first quarter of 2016 is closest to which of the following figures?
A.1.4 million tons
B.1.6 million tons
C.1.8 million tons
D.2 million tons
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Answer C
Analysis
The first step is to examine the calculation of the interval base period.
The second step is to position the first paragraph of the text material, "In the first quarter of 2018, my country's aquatic product imports and exports were 1.9267 million tons, a year-on-year decrease of 7.27, and the growth rate was 21.97 percentage points lower than the same period last year."
③Calculation of interval multiples
In the first half of 2017, enterprises above designated size in the pharmaceutical industry achieved main business income of 1.53144 billion yuan, a year-on-year increase of 12.39%, and the growth rate increased by 2.25 percentage points compared with the same period last year. . Among the various sub-sectors, the fastest growing is the processing of traditional Chinese medicine pieces. The growth rate of chemical preparations, Chinese patent medicines and pharmaceutical equipment is lower than the industry average.
Example 4 (2017 Xinjiang) In terms of main business income achieved by enterprises above designated size in the pharmaceutical industry, the first half of 2017 was approximately that of the first half of 2015:
A.1.13 times
B.0.13 times
C.1.24 times
D.0.24 times
Answer C
Analysis
The first step is to test the calculation of interval multiples.
The second step is to position the text material "In the first half of 2017, enterprises above designated size in the pharmaceutical industry achieved main business income of 1.53144 billion yuan, a year-on-year increase of 12.39, and the growth rate increased by 2.25 percentage points compared with the same period last year."
④ Calculation of interval growth
Example 5 (2019 Liaoning) The number of newly registered market entities in 2018 increased by approximately 10,000 compared with 2016.
A.16
B.18
C.20
D.22
Answer B
Analysis
The first step is to examine the calculation of interval growth.
The second step is the positioning form. In 2018, there were 661,000 newly registered market entities, a year-on-year increase of 5.1%, and the growth rate increased by -25.5 percentage points year-on-year.
Example 6 In 2018, the total profit from the main business of industrial enterprises above designated size increased by approximately () billion yuan compared with 2016.
A.471
B.535
C.703
D.928
Answer D
Analysis
The first step is to examine the calculation of interval growth.
The second step is to locate the table materials, "In 2018, the main industrial business profit was 146.04 billion yuan, a year-on-year increase of 41.8%, and the growth rate was 51.9 percentage points lower than last year."
Therefore, choose option D.