Examples of pooling in the following topics:
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- In such cases, we can make our t distribution approach slightly more precise by using a pooled standard deviation.
- The pooled standard deviation of two groups is a way to use data from both samples to better estimate the standard deviation and standard error.
- Caution: Pooling standard deviations should be done only after careful research
- A pooled standard deviation is only appropriate when background research indicates the population standard deviations are nearly equal.
- When the sample size is large and the condition may be adequately checked with data, the benefits of pooling the standard deviations greatly diminishes.
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- Groups of motor units are innervated to
coordinate contraction of a whole muscle and generate appropriate movement; all
of the motor units within a muscle are considered a motor pool.
- There are often multiple sizes of motor
unit within a motor pool as a means of modulating the precision and force
produced by a single muscle.
- These multiple motor units of different
sizes within a motor pool allow for very fine control of force either spatially
or temporally.
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- Consider three pool balls, each with a number on it.
- For this simple example , the distribution of pool balls and the sampling distribution are both discrete distributions.
- The pool balls have only the numbers 1, 2, and 3, and a sample mean can have one of only five possible values.
- This table shows all the possible outcome of selecting two pool balls randomly from a population of three.
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- The gene pool is the sum of all the alleles at all genes in a population.
- Random events that alter allele frequencies will have a much larger effect when the gene pool is small.
- Therefore, many different populations, with very different and uniform gene pools, can all originate from the same, larger population.
- Here are three possible outcomes of the founder effect, each with gene pools separate from the original populations.
- Define a population gene pool and explain how the size of the gene pool can affect the evolutionary success of a population
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- She likes swimming at the pool or in the river depending on how hot it is.
- She likes swimming at the pool so she doesn't have to drive to the river.
- She likes swimming at the pool, for she wants to stay cool.
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- Pool feeders, which include both the sand and black fly, responsible for Leishmaniasis and Onchocerciasis diseases, will chew the hosts skin.
- The chewing action produces a well which promotes the formation of a small pool of blood from which they feed.
- In the case of black flies, responsible for Onchocerciasis, the parasites are forced out of the insects head into the pool of blood.
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- This is a reflection of the differential energy pools used for anaerobic versus aerobic respiration, specifically the prioritization of use of phosphocreatine as an ATP pool for Type II muscles, which are primarily used during anaerobic exercise.
- Molecular structure of phosphocreatine donates the high energy phosphate group to ADP and acts as a short-term energy pool for muscle contractions.
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- The wages earned by various employees can be used to illustrate market-oriented theories of inequality: Doctors are paid high wages because their services are widely needed and require extensive training that few have; by contrast, seasonal agricultural laborers are poorly compensated because the demand for their services is limited and a large pool of unqualified laborers is qualified for the job.
- According to market-oriented theories of inequality, the low wage earned by seasonal agricultural laborers will encourage members of the labor pool to acquire other skills, which in term will raise the wage earned by agricultural laborers.
- For example, in countries with huge pools of unskilled agricultural laborers but limited agricultural land, agricultural land is very poorly compensated.
- According to market-oriented theories, over time the low wages earned by agricultural laborers will induce more people to learn other skills, thus reducing the pool of agricultural laborers.
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- The hypothesis is that eukaryotes evolved not from a single prokaryotic ancestor, but from a pool of many species that were sharing genes by HGT mechanisms.
- The "ring of life" is a phylogenetic model where all three domains of life evolved from a pool of primitive prokaryotes .
- Using the conditioned reconstruction algorithm, it proposes a ring-like model in which species of all three domains (Archaea, Bacteria, and Eukarya) evolved from a single pool of gene-swapping prokaryotes.
- According to the "ring of life" phylogenetic model, the three domains of life evolved from a pool of primitive prokaryotes.