What is Engel's coefficient? How to calculate it?

What is Engel's coefficient? How to calculate it?

In 1857, the world famous German statistician Engel expounded a law: with the increase of family and personal income, the proportion of expenditure on food in income will gradually decrease. This law is called Engel's law, and the coefficient reflecting this law is called Engel's coefficient

What is Engel's coefficient? What is its formula?

In 1857, the world-famous German statistician Engel expounded a law: with the increase of family and personal income, the proportion of income spent on food will gradually decrease. This law is called Engel's law, and the coefficient reflecting this law is called Engel's coefficient
Engel coefficient (%) = total food expenditure / total household or personal consumption expenditure × 100%
Engel's law mainly describes a certain trend that the proportion of food expenditure in total consumption expenditure changes with the change of income. It reveals the correlation between residents' income and food expenditure, and uses the proportion of food expenditure in total consumption expenditure to explain the impact of economic development and income increase on living consumption, When the income level is low, it will play an important role in the consumption expenditure. With the increase of income, the focus of consumption will begin to shift to clothing, use and other aspects when the food demand is basically met. Therefore, the poorer a country or family lives, the greater the Engel coefficient; on the contrary, the richer the life, the smaller the Engel coefficient
Engel's law and Engel's coefficient have been widely accepted and confirmed by western economists as having universal applicability as soon as they are put forward. They have been used in statistical work earlier in China. The calculation of Engel's coefficient is generally based on the data of urban and rural household survey in various places. For example, according to the data of urban household survey in Beijing in 1998, the per capita consumption expenditure of residents is 6970.8 yuan, The per capita food expenditure is 2865.7 yuan, and the Engel coefficient is 41.1%
Engel coefficient is often used to measure the living standard of people in a country or region in the world. According to the standard put forward by the FAO, the Engel coefficient of more than 59% is poverty, 50-59% is food and clothing, 40-50% is well-off, 30-40% is rich, and less than 30% is the richest, For example, the price comparison of consumer goods is different, the living habits of residents are different, and the special factors caused by different social and economic systems. For these incomparable problems in cross-sectional comparison, we should eliminate them when we analyze and compare them. In addition, we should pay attention to that Engel coefficient reflects a long-term trend when we observe the changes of historical situation, It is a long-term trend in the short-term fluctuation of ironing

Calculation of Engel's coefficient

Engel's coefficient is the proportion of total food expenditure to total personal consumption expenditure

What is the acronym for Microeconomics
For example, MC is marginal cost and so on

P: Price Q: quantity D: demand s: supply e: equilibrium (or expectation) e: elasticity ED: price elasticity of demand es: price elasticity of supply exy: cross price elasticity of demand U: utility Tu: total utility Mu: marginal utility CS: consumer surplus MRS: marginal substitution rate of goods L: Labor force K: Capital

In order to improve the efficiency of text input, people often use symbols or letters to represent its meaning. Who knows the meaning of letter C?

See, understand

What are numbers and letters used in electrical appliances
To answer this question:
What are numbers for? What are letters for
Such as refrigerator, washing machine, etc

Every kind of electric appliance has many numbers and letters, even if the same appliance, the same letter or number, it may have different meanings. For example, a refrigerator bcd-178chc this group of numbers and letters respectively: the number means: "178" means that the capacity of the refrigerator is 178 liters, which is how big the space in the refrigerator is

What does the letter of the number set mean? For example: what is the letter of natural number? What is the letter of rational number

The set composed of all non negative integers is called the set of non negative integers (or set of natural numbers), denoted as n;
The set of all positive integers except zero is called positive integer set, which is denoted as n * or N + ("+" is marked in the lower right corner);
The set composed of all integers is called the set of integers, denoted as Z;
The set of all rational numbers is called the set of rational numbers, denoted as Q;
The set of all real numbers is called real number set, denoted as R
The set of all imaginary numbers is called the set of imaginary numbers, denoted as C

Is a set of letters a set of numbers?
For example, is {a, B} a set of numbers?
If not, why can't a and B represent any real number?

{a, B} is not a set of numbers, but a set of numbers,
Only when {a, B, where a and B belong to real numbers}, can we express a set of numbers

What are the common types of numbers represented by letters?
When I read the function, I see that R is used to represent real numbers and N is used to represent integers. What letter is used to represent what number?
Who can help to list some common types of numbers represented by letters? What are some?

Z is the set of integers, q is the set of rational numbers, C is the set of complex numbers, and N is the set of non negative integers
N * denotes a set of positive integers

What number set does the special symbol K of number set represent

There is no number set of K, which is generally represented by nzqr. The irrational number set is not k, and the imaginary number set is not