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When can you estimate a population's size when counting individuals in a sample of the population?
You can estimate a population's size when counting individuals if the density in a sample is greater than the population density.
Why do scientists need to know the size of a population?
Sometimes they do, sometimes they don't.
What is one method the ecologists use to estimate the size of a population?
survey
Why do ecologists use the technique of sampling to estimate population size?
In many cases, it is not even possible to count signs of every member of a population. The population may be very large or spread over a wide area. In such cases ecologists usually make an estimate. An estimate is an approximation of number, based on reasonable assumptions.
What sample size is required from a very large population to estimate a population proportion within?
The answer depends on how rare or common the selected trait is. For something that is very rare, you will need a much larger sample to get a reasonable estimate of proportion.
When can you estimate a population's size when counting individuals in a sample of the population?
You can estimate a population's size when counting individuals if the density in a sample is greater than the population density.
Why do scientists need to know the size of a population?
Sometimes they do, sometimes they don't.
What is the estimate current world population size?
4.3 billion
What is the Arctic wolf's population?
Scientists can only estimate the harp seal's population. Using aerial photography and other tools, they estimate the harp seal to number in the range of 7.5 million.
What is one method the ecologists use to estimate the the size of a population?
survey
What is one method the ecologists use to estimate the size of a population?
survey
Why is it difficult to estimate the size of a population of animals?
They never fill out the census forms.
How can scientists use radio collares to estÃmate a population’s size?
This question is unclear because I do not know what collares are.
Where does the UK fit in terms of population with the world?
The mid 2010 estimate of the UK's population was 62,260,000. This put the UK at 22nd place in terms of population size.
What is the size and population of Romania?
Area: 238 391 km2 Population (estimate): ca. 21 450 000 at 15 June 2009
What percentage of people in Alabama are gay?
Census data does not include sexuality, but scientists currently estimate that around 3.5% to 8% of the population is gay.
How do scientists estimate wind speeds of a tornado?
Scientists use the severity of damage that a tornado causes to estimate wind speed.
