What is the define of population?
A population is a distinct group of individuals, whether that group comprises a nation or a group of people with a common characteristic. In statistics, a population is the pool of individuals from which a statistical sample is drawn for a study.
What are the advantages and disadvantages of non probability sampling?
Advantages and disadvantages A major advantage with non-probability sampling is that—compared to probability sampling—it’s very cost- and time-effective. It’s also easy to use and can also be used when it’s impossible to conduct probability sampling (e.g. when you have a very small population to work with).
What are 3 density dependent factors and how do they work to control the size of a population?
Density-dependent factors include disease, competition, and predation. Density-dependant factors can have either a positive or a negative correlation to population size. With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases.
What is the effect of population?
It leads to the cutting of forests for cultivation leading to several environmental change. Besides all this, the increasing population growth leads to the migration of large number to urban areas with industrialization. This results in polluted air, water, noise and population in big cities and towns.
What are the two primary parameters used to describe a population?
Within a particular habitat, a population can be characterized by its population size (N), the total number of individuals, and its population density, the number of individuals within a specific area or volume. Population size and density are the two main characteristics used to describe and understand populations.
Which of the following factors do you think can affect the size and structure of a population Brainly?
All of the factors affect population size. Birth rate, death rate, immigration, emigration, disease, competition and predation, human activity and natural disasters and occurrences. Population size is the total number of individual organisms in a population.
What are the advantages and disadvantages of random sampling?
Random samples are the best method of selecting your sample from the population of interest. The advantages are that your sample should represent the target population and eliminate sampling bias. The disadvantage is that it is very difficult to achieve (i.e. time, effort and money).
How does population affect the environment?
The impact of so many humans on the environment takes two major forms: consumption of resources such as land, food, water, air, fossil fuels and minerals. waste products as a result of consumption such as air and water pollutants, toxic materials and greenhouse gases.
What are 4 methods of determining population size?
Four methods of determining population size are direct and indirect observations, sampling, and mark-and-recapture studies.
What is an advantage of a random population distribution What is a disadvantage?
random distribution advantages and disadvantages. advantage: easy to evade predators. disadvantage: competition if one organism is too close to another. uniform distribution advantage and disadvantages. advantage: more food available, less competition.
What factors affect the growth of the population?
Population growth rate is affected by birth rates, death rates, immigration, and emigration. If a population is given unlimited amounts of food, moisture, and oxygen, and other environmental factors, it will show exponential growth.
Why is random distribution so rare?
Random distribution is rare in nature as biotic factors, such as the interactions with neighboring individuals, and abiotic factors, such as climate or soil conditions, generally cause organisms to be either clustered or spread.
Can environmental factors affect the population growth and size?
Environmental factors do affect a population’s growth rate, however. The interaction of the population’s natural growth rate and the environment determines the density of the surviving population. The maximum number of individuals that a given environment can support is called the carrying capacity.