What is the average age of human beings How are the ages of human beings divided

The average life expectancy of human beings is related to factors such as social institutions, socio-economic development, social health care measures, and scientific and technological progress. Before liberation, the average life expectancy of our people was about 35 years. After liberation, according to the statistics of the 1978 census, the average life expectancy of the Chinese people was 69 years for men and 69 years for women, which was nearly double that before liberation.

In 1980, the average life expectancy of the population in most parts of China exceeded 70 years, which was among the world's advanced levels. In addition to the political emancipation, the improvement of the economic situation, the improvement of living standards, and the improvement of sanitary conditions, the increase in the average life expectancy of the population in our country is also related to the dietary habits. The people's diet is mainly based on cereals, vegetables, crude fiber and vegetable oil, and refined cane sugar, animal fats and cholesterol account for a small proportion of the food.

This dietary peculiarity is beneficial in preventing the occurrence of cardiovascular diseases. According to statistics, among the causes of death, the most common cause of death after the age of 65 is cardiovascular and cerebrovascular diseases. Scientists believe that the onset of atherosclerotic coronary heart disease in Chinese people is 10-15 years later than that of Europeans and Americans, which may be related to the characteristics of this diet in China.

Therefore, when the standard of living continues to improve, it is very beneficial to continue to retain this dietary structure characteristics to prolong life Average life expectancy of Chinese Calculate your life expectancy At present, the average life expectancy of Chinese is 72 years. Satisfied.

According to the data provided by the Fifth Population Census, the average age of the Chinese population is aged. The development trend of China's population age structure**, in another 10 years, by 2015, the average age of Chinese will reach 44 years old, and China will soon enter an aging society. Information on the average age of all human beings is not available.

At a time when environmental pollution is serious, the average life expectancy of a person is about a year

The average life expectancy of the population varies greatly from one era to another and from one region to another, and human society is constantly progressing, and the average life expectancy of the population is also growing. Relevant data show that about 2,000 years ago, the average life expectancy of human beings was about 20 years. In the 18th century, he grew to 30 years old; At the end of the 19th century, the average age was only around 40; In 1980, the average life expectancy of the world population had reached 61 years, 72 years in developed countries and 57 years in developing countries: in 1985, the average life expectancy of the world population had risen to 62 years, 73 years in developed countries and 58 years in developing countries.

Iceland and Japan have the highest average life expectancy in the world, at 77 years each. The top 10 countries with the highest life expectancy in the world are: Japan, Australia, Canada, France, Spain, Singapore, Greece, Israel, Italy and Sweden, all of which have an average life expectancy of more than 78 years.

The average life expectancy of Chinese is years. Sierra Leone, the country with the shortest life expectancy in the world, had an average life expectancy of only 40 years in 1997, a full 40 years less than the world's longest-lived Japanese.

The mean age is calculated on the basis of the number or weight of each age group.

An indicator of the representative age level of a population, the value of which depends on the level of the maximum age of the population and the weight of the population in each age group, is usually calculated by the formula of arithmetic mean, i.e., the average age is equal to the group median of each age group multiplied by the sum of the number of people in each age group, and then divided by the total population.

The formula is as follows: 1. The formula for calculating the weighted arithmetic mean is: the sum of the average age (the median value of each age group and the weight of the number of people in each age group).

The age of each group is represented by the median value of the group, which assumes that the population is evenly distributed within the group. Therefore, the smaller the group spacing, the more accurate the calculation result. In cases where the age group is equidistant, such as:

Every 1 year old group, every 5 years old group or every 10 years old group, etc., the calculation formula can be rewritten as:

2. The sum of the average age (group spacing) 2 or the average age (the lower limit of each age group and the proportion of the number of people in each age group) (group spacing) 2.

Mean age is an average that depends on the highest achievable age of the population and the weight of each age group, and it has the advantages of being easy to understand, easy to calculate, and highly sensitive. However, in practice, the median value of the group is difficult to determine because the last age group is often the open group, so the average age cannot be calculated. <>

Those with names from 0 to 100 years old are called:

1. Juvenile general name - total horn; 7 years old - the age of hair; 8 years old - the year of the dragon; Under 10 years old - yellow mouth.

15 years old - the year of the spoon dance; 15 20 years old—the year of the elephant dance; 12 years old (female) - the year of the golden hairpin.

Years (female) - cardamom years; 15 years old (female) - the year of the year; 16 years old (female) - broken melon years.

Years (female) - peach and plum years; 24-year-old (female) Hua Xinnian; 30 years old (female) - half-aged.

Years old (Ming Chi male) - weak crown; 30 years old (male) - the year of establishment; 40 years old (male) - not confused young and early.

Age - more than half a hundred; 60 years old - the year of the sixtieth year, the flat-headed nail, the year of the ear, the year of the cane township.

years - the year of the cane dynasty; 80 90 years old - the age of the elderly; 90 years old; 100 years old - expectation.

What is the average age of the world's population? Which country is the highest and lowest?

The average age of the world's entire population was only 26 last year, according to a study published April 14 in Wiesbaden by the German Federal Institute for Population Research.

The average age of the population and the average life expectancy of the population are two different concepts. According to the report, the main reasons for such a low average age of the world population are the high birth rates in Africa and Asia, and the disproportionate proportion of infants and young children in the total population.

According to the report, Italy and Japan have the highest average age of the population, at exactly 40 years old; This is followed by Germany, where the average age of the population is years. The lowest average age is in the Gaza Strip, where it is only years; This is followed by Uganda (15 years) and Nigeria (years). The average life expectancy of the world's population is about 65 years.

The average life expectancy of Japanese people is the highest in the world, reaching nearly 80 years last year; This is followed by Iceland and Canada (79 years). The average life expectancy of Sierra Leoneans in Africa is the lowest in the world, at 37 years.

The World Health Organization confirms that the average life expectancy of inhabitants of the planet is years, and that of the inhabitants of Russia is years. The average life expectancy of Russians is lower than that of Belarusians (years), but more than that of Armenians, Ukrainians, Moldovans, Tajikistanis, Uzbeks (63.).9 years old), Kyrgyzstani (years old), Kazakhs (years old), Azerbaijanis (years old), Turkmen (years old).

The longest life expectancy in some countries of the former Soviet Union is for people living in the Baltic Sea: Estonian residents live in years, Lithuanians - years - years - Latvians - 69 years. Interestingly, residents of Andorra and San Marino, the small countries of southwestern Europe, live the longest – years and years respectively, followed by the third-oldest for residents of Japan and the fourth-oldest for residents of Singapore.

The countries with the shortest life expectancy are Botswana in southern Africa and Mozambique in southeastern Africa. The United States ranks 47th in the world in terms of life expectancy, with an average life expectancy of its inhabitants, ahead of France (years), Israel (years), the United Kingdom (years) and Germany (years).

Year.

According to the relevant information of the encyclopedia, on May 11, 2021, the results of the seventh national census were announced, and the average age of the Chinese population was years. The average age is one of the indicators that reflect the concentrated trend of the age of a particular population, and is an important characteristic value of the age distribution of the population.

The average age is the average age of a certain population under certain conditions of time and place. That is to say, the age differences of each individual are abstracted within the population rolling group, and the age is used to reflect the general level of the people's congress under certain time and place conditions.

The average age of Chinese is 75 years old

The average life expectancy of Chinese in 2001 was years, compared with years in 1981, an increase of 4 years in 20 years. Before the founding of New China, the average life expectancy of Chinese was only 35 years. According to the United Nations Population Service's World Population Prospects:

According to the 2000 revision, the average life expectancy in developed countries is now 75 years, while in developing countries it is 63 years. This shows that China's per capita life expectancy is close to the level of developed countries, and the average level of developed countries has exceeded the average level of developed countries.

The average age. The men are about the age and the women are about that: D