science

List of countries by marriage and divorce rates

List of countries by marriage and divorce rates is a science 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 List of countries by marriage and divorce rates rather than just read about it. In short: This is a list of countries by marriage and divorce rates, where divorce demography is the study of divorce statistics in a population. Metrics There are three ratios used for divorce rate calculations: crude divorce rate, refined divorce rate, and divorce-to-marriage ratio.

Key takeaways

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Reference excerpt

This is a list of countries by marriage and divorce rates, where divorce demography is the study of divorce statistics in a population.

Metrics There are three ratios used for divorce rate calculations: crude divorce rate, refined divorce rate, and divorce-to-marriage ratio. Each of these calculations has weaknesses and can be misleading.

Crude divorce rate This is divorces per 1,000 population per year. For example, if a city has 10,000 people living in it, and 30 couples divorce in one year, then the crude divorce rate for that year is 3 divorces per 1,000 residents. Crude Divorce Rate = Number of divorces Population × 1000 {\displaystyle {\text{Crude Divorce Rate}}={\frac {\text{Number of divorces}}{\text{Population}}}\times 1000} The crude divorce rate can give a general overview of marriage in an area, but it does not take people who cannot marry into account. For example, it would include young children, who are clearly not of marriageable age in its sample. In a place with large numbers of children or single adults, the crude divorce rate can seem low. In a place with few children and single adults, the crude divorce rate can seem high.

Refined divorce rate This measures the number of divorces per 1,000 women married to men, so that all unmarried persons are left out of the calculation. For example, if that same city of 10,000 people has 3,000 married women, and 30 couples divorce in one year, then the refined divorce rate is 10 divorces per 1,000 married women. Refined Divorce Rate = Number of divorces Number of married women × 1000 {\displaystyle {\text{Refined Divorce Rate}}={\frac {\text{Number of divorces}}{\text{Number of married women}}}\times 1000}

Divorce-to-marriage ratio This compares the number of divorces in a given year to the number of marriages in that same year (the ratio of the crude divorce rate to the crude marriage rate). For example, if there are 500 divorces and 1,000 marriages in a given year in a given area, the ratio would be one divorce for every two marriages, e.g. a ratio of 0.50 (50%). Divorce-to-marriage ratio = Number of divorces Number of marriages {\displaystyle {\text{Divorce-to-marriage ratio}}={\frac {\text{Number of divorces}}{\text{Number of marriages}}}} However, this measurement compares two unlike populations – those who can marry and those who can divorce. Say there exists a community with 100,000 married couples, and very few people capable of marriage, for reasons such as age. If 1,000 people obtain divorces and 1,000 people get married in the same year, the ratio is one divorce for every marriage, which may lead people to think that the community's relationships are extremely unstable, despite the number of married people not changing. This is also true in reverse: a community with very many people of marriageable age may have 10,000 marriages and 1,000 divorces, leading people to believe that it has very stable relationships. Furthermore, these two rates are not directly comparable since the marriage rate only examines the current year, while the divorce rate examines the outcomes of marriages for many previous years. This does not equate to the proportion of marriages in a given single-year cohort that will ultimately end in divorce. In any given year, underlying rates may change, and this can affect the ratio. For example, during an economic downturn, some couples might postpone a divorce because they can't afford to live separately. These individual choices could seem to temporarily improve the divorce-to-marriage ratio.

Statistics

Worldwide

See also List of countries by age at first marriage

References

External links Authorship: United States CDC National Center for Health Statistics; Contents: Longitudinal study of first-marriage outcomes in the United States, 2012

Worked examples

Example 1 — a first encounter with List of countries by marriage and divorce rates

Start with the simplest possible case. Write down what List of countries by marriage and divorce rates claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 List of countries by marriage and divorce rates 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 List of countries by marriage and divorce rates 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 List of countries by marriage and divorce rates

In research: List of countries by marriage and divorce rates appears in science 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 List of countries by marriage and divorce rates 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: List of countries by marriage and divorce rates is common in secondary-school and first-year university syllabi. It links to neighbouring topics Demography, Divorce, Family law, so understanding it makes those chapters shorter.
In everyday life: Look for List of countries by marriage and divorce rates 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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Frequently asked questions

What is List of countries by marriage and divorce rates in simple terms?

This is a list of countries by marriage and divorce rates, where divorce demography is the study of divorce statistics in a population. Metrics There are three ratios used for divorce rate calculations: crude divorce rate, refined divorce rate, and divorce-to-marriage ratio.

Why does List of countries by marriage and divorce rates matter?

Because it connects several science 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 List of countries by marriage and divorce rates?

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.

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