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It is a sampling method in which units are selected based on easy access/availability. The disadvantage of convenience sampling is that the units that are easiest to obtain may not be representative of the population. For example products on top of a box of parts may be a different quality from those at the bottom, people who are at home when the market researcher calls may not be representative of the entire population. It is also called as Accidental Sampling.
The sample is a subset of the population. For example, the population may be all the people at your school. A sample might be 5 people from each class. There are different types of sampling methods. The most commonly used is a simple random sample. When your obtain data from the entire population this is called a census.
Derived units
You divide the dividend by the divisor to obtain the quotient.
The multiplicand is multiplied by the multiplier to obtain the product. They are both also known as factors.
Nope. Sampling time - is the amount of time it takes to obtain the sample. Sampling interval - is the period of time between samples. For example - it may take 10 seconds to obtain a sample. Obtaining a sample once a day is a sampling interval of 24 hours.
Systematic sampling
It is a sampling method in which units are selected based on easy access/availability. The disadvantage of convenience sampling is that the units that are easiest to obtain may not be representative of the population. For example products on top of a box of parts may be a different quality from those at the bottom, people who are at home when the market researcher calls may not be representative of the entire population. It is also called as Accidental Sampling.
Instrument flanges, (sometimes called Bleed Rings or Sampling flanges), allow a means to measure pressure or obtain fluid samples from a pressurized flange connected line. The instrument flange provides a means of having threaded ports in the line without drilling and tapping the principle equipment in the line (The operator can replace the instrument flange if the threaded ports should become damaged or begin to leak). Instrument flanges commonly have 2, 3, or 4 ports. The two common forms of instrument flanges, the drilled through type, and the double studded type, function interchangeability.
what instrument is used to obtain a endocervical tissue
The purpose is to obtain a statistical representative sample from the material to be tested.
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The instrument used to obtain blood pressure is a sphygmomanometer.
The instrument used to obtain blood pressure is a sphygmomanometer.
CVS (Chorionic Vili Sampling) and Amniocentesis. (High School Biology Student)
In most cases you will have to pay for this type of information. Some wok from home sites like www.wahm.com have some information.