mathematics

Jakob Mohn

Jakob Mohn 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 Jakob Mohn rather than just read about it. In short: Jakob Neumann Mohn (31 May 1838 – 16 February 1882) was a Norwegian statistician. Personal life He was born in Bergen as a son of Albert Henrik Mohn (1811–1894) and Ida Neumann (1814–1864).

Key takeaways

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

Reference excerpt

Jakob Neumann Mohn (31 May 1838 – 16 February 1882) was a Norwegian statistician.

Personal life He was born in Bergen as a son of Albert Henrik Mohn (1811–1894) and Ida Neumann (1814–1864). Originally named Jacob, he changed the spelling. He was a brother of Henrik and Emanuel Mohn. On the maternal side, he was a grandson of bishop Jacob Neumann. In July 1866 he married Valeria Paasche (1843–1912). He was a granduncle of Frank and Albert Henrik Mohn, and since his daughter Hanna married physician and politician Nils Yngvar Ustvedt, Mohn was a grandfather of Hans Jacob Ustvedt.

Career He finished his secondary education at Bergen Cathedral School in 1855, and graduated from the Royal Frederick University with the cand.jur. degree already in 1859. He was soon hired in the Statistics Office, and together with Anders Nicolai Kiær he led its transition into an independent research directorate, renamed Det statistiske Centralbureau in 1876. Norway as a country implemented the use of large, quantitative statistics in politics quite early. The initiator was the priest and researcher Eilert Sundt, and Mohn. Mohn was also involved in the workers' society Christiania Arbeidersamfund, and through his research on child labour among other things, he capacitated social reform. His last work was Norges Land og Folk, requisitioned by the Norwegian Parliament in 1874, and meant to be a grand reference work. However, he never finished a single volume, as he died in February 1882 in Kristiania. His work was carried on by Anders Nicolai Kiær and Boye Strøm.

References

Worked examples

Example 1 — a first encounter with Jakob Mohn

Start with the simplest possible case. Write down what Jakob Mohn 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 Jakob Mohn 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 Jakob Mohn 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 Jakob Mohn

In research: Jakob Mohn 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 Jakob Mohn 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: Jakob Mohn is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1838 births, 1882 deaths, 19th-century statisticians, so understanding it makes those chapters shorter.
In everyday life: Look for Jakob Mohn 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 Jakob Mohn in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jakob Mohn 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.
Explain Jakob Mohn out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jakob Mohn in simple terms?

Jakob Neumann Mohn (31 May 1838 – 16 February 1882) was a Norwegian statistician. Personal life He was born in Bergen as a son of Albert Henrik Mohn (1811–1894) and Ida Neumann (1814–1864).

Why does Jakob Mohn 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 Jakob Mohn?

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 Jakob Mohn.