mathematics

Statistics of the COVID-19 pandemic in China

Statistics of the COVID-19 pandemic in China is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Statistics of the COVID-19 pandemic in China rather than just read about it. In short: This article presents official statistics gathered during the COVID-19 pandemic in mainland China. The case count in mainland China only includes symptomatic cases.

Key takeaways

Statistics of the COVID-19 pandemic in China belongs to mathematics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Statistics of the COVID-19 pandemic in China to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Statistics of the COVID-19 pandemic in China from memory before moving on to harder problems.

Reference excerpt

This article presents official statistics gathered during the COVID-19 pandemic in mainland China. The case count in mainland China only includes symptomatic cases. It excludes patients who test positive but do not have symptoms, of which there were 889 as of 11 February 2020. Asymptomatic infections are reported separately. It is also reported that there were more than 43,000 by the end of February 2020. On 17 April, following the Wuhan government's issuance of a report on accounting for COVID-19 deaths that occurred at home that went previously unreported, as well as the subtraction of deaths that were previously double-counted by different hospitals, the NHC retrospectively revised their cumulative totals dating to 16 April, adding 325 cumulative cases and 1,290 deaths. Around March 2020, there was speculation that China's COVID numbers were deliberately inaccurate, but as of 2021, China's COVID elimination strategy was considered to have been successful and its statistics were considered to be accurate. By December 2022, the Chinese central government had changed its definition of reported death statistics to only include cases in which COVID-19 directly caused respiratory failure, which led to skepticism by health experts of the government's total death count. The same month, the municipal health chief of Qingdao reported "between 490,000 and 530,000" new COVID-19 cases per day. China was part of a small group of countries such as Taiwan, Australia, New Zealand, and Singapore that pursued a zero-COVID strategy. The Chinese government's strategy involved extensive testing, mask wearing, temperature checks, ventilation, contact tracing, quarantines, isolation of infected people, and heavy restrictions in response to local outbreaks. On December 25, 2022, the Chinese government's National Health Commission announced that it would no longer publish daily COVID-19 data. In January 2023, the World Health Organization stated, "We believe that the current numbers being published from China under-represent the true impact of the disease in terms of hospital admissions, in terms of ICU admissions, and particularly in terms of deaths."

Timeline

Charts

2020 cumulative and daily cases graph Data is from the Chinese National Health Commission.

New cases per day

Deaths per day

Recoveries per day

By province

By city

Economic Performance

Notes

References

Illustrations

Statistics of the COVID-19 pandemic in China: Map of total Covid-19 cases across Chinese provinces between 2020-01-23 and 2022-06-01 — Map of total Covid-19 cases across Chinese provinces between 2020-01-23 and 2022-06-01

Worked examples

Example 1 — a first encounter with Statistics of the COVID-19 pandemic in China

Start with the simplest possible case. Write down what Statistics of the COVID-19 pandemic in China claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Statistics of the COVID-19 pandemic in China before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Statistics of the COVID-19 pandemic in China ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Statistics of the COVID-19 pandemic in China

In research: Statistics of the COVID-19 pandemic in China appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Statistics of the COVID-19 pandemic in China in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Statistics of the COVID-19 pandemic in China is common in secondary-school and first-year university syllabi. It links to neighbouring topics COVID-19 pandemic in China, Statistics of the COVID-19 pandemic, so understanding it makes those chapters shorter.
In everyday life: Look for Statistics of the COVID-19 pandemic in China outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Statistics of the COVID-19 pandemic in China in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Statistics of the COVID-19 pandemic in China means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
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Frequently asked questions

What is Statistics of the COVID-19 pandemic in China in simple terms?

This article presents official statistics gathered during the COVID-19 pandemic in mainland China. The case count in mainland China only includes symptomatic cases.

Why does Statistics of the COVID-19 pandemic in China matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Statistics of the COVID-19 pandemic in China?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Statistics of the COVID-19 pandemic in China.