Data analysis is an indispensable part of the test, and the examination of the growth rate is an indispensable part of the data analysis. Let's take a look at the growth rate.
First, use the characteristics of growth rate mixture to solve the growth rate.
In 2020, the Internet business revenue in the eastern region was 1,122.7 billion yuan, a year-on-year increase of 148%, the growth rate fell 9 percentage points from the same period last year. The Internet business revenue in the central region was 448100 million yuan, a year-on-year increase of 34%, the growth rate fell by 53 from the same period last year1 percentage point. The income of Internet business in the western region was 497200 million yuan, a year-on-year increase of 69%, the growth rate fell by 15 from the same period last year2 percentage points. The Internet business revenue in the Northeast region was 47100 million yuan, a year-on-year increase of 91%。
Question: In 2020, the year-on-year growth rate of national Internet business revenue was ( ).
a3.4% b.13.98% c.14.8% d18.4%
Answer] B. Analysis: This topic examines the mixed growth rate, and according to the materials, it can be seen that "in 2020, the year-on-year growth rates of Internet business revenue in the eastern, central, western, and northeastern regions were respectively. 1%”。
Quick solution: The minimum value of the partial growth rate is 34% with a maximum of 148%, the growth rate of each part and the sum must be higher than the minimum value, lower than the maximum value, then it can be seen that the year-on-year growth rate of national Internet business revenue should be 34%～14.8%, so choose item B.
Summary] When the growth rate of each part is known to solve the mixed growth rate, the mixed growth rate can be based on the characteristics of the mixed growth rate: the mixed growth rate must be between the growth rate of each part.
Second, use multiples to solve the growth rate.
In 2020, the information service revenue of Internet enterprises totaled 706.8 billion yuan, which was 115 times, the growth rate was lower than the same period last year 112 percentage points. Internet access and related services revenue 447500 million yuan, which is 1 of the previous year34 times, the growth rate was lower than the same period last year 208 percentage points.
Question: In 2020, the year-on-year growth rate of Internet access and related services revenue was ( ).
a13.2% b.34% c.134% d54.8%
Answer] B. Analysis: This question examines the relationship between multiples and growth rates, according to the material "Internet access and related services revenue 447500 million yuan, which is 1 of the previous year34 times".
Quick solution: According to the growth rate = is several times -1, then the year-on-year growth rate of Internet access and related service revenue in 2020 is 134-1=0.34=34%, so choose b for this question.
Summary] When it is known to be several times, the growth rate can be directly calculated according to the growth rate = how many times -1.
3. Use the judgment of the ratio of two numbers (
The law of change solves for the growth rate.
From January to February 2020, China's outbound investment mainly flowed to traditional investment areas such as leasing and business services, wholesale and retail, manufacturing and mining, accounting for the proportion of non-financial direct investment in overseas enterprises. 3% and 89%, up from the same period last year. 4 percentage points. Among them, the amount of investment in leasing and business services increased by 43% year-on-year2%, becoming the area with the highest growth rate.
Question: From January to February 2020, China's non-financial direct investment in overseas enterprises increased year-on-year ( ).
a41.2% b.43.5% c.45.8% d47.6%
Summary] When the change in the ratio of two numbers is known, the size relationship between QA and QB can be obtained, so as to judge the range of growth rate, and the correct answer can be obtained by combining options.
The above are some methods that can be shared with you to solve the growth rate more quickly, I hope we can practice more, think about problems from multiple angles, find more methods, and make ourselves to the next level.
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