Systematic sampling doesn't require a frame. This method takes in every data from a sample, rather than restricting it by any particular means.
Samplig frame is the source material from which the sample is drawn. If you have a 'list' of names of all inviduals from which you could draw a sample, the list is a sampling frame. A samplig unit is the sample being chosen.
Answer is Quota sampling. Its one of the method of non-probability sampling.
because it is the simplest sampling technique which requires less time and cost.
simple random sampling method
What is wrong is that the method has not been properly specified.
Random samples that do not require a sampling frame include convenience sampling and snowball sampling. In convenience sampling, researchers select individuals who are easily accessible, while snowball sampling relies on existing study subjects to recruit additional participants, often used in hard-to-reach populations. Both methods do not require a comprehensive list of the entire population, which is a key characteristic of traditional sampling frames.
Sampling is a method of selecting experimental units from a population so that we can make decision about the population. Sampling design is a design, or a working plan, that specifies the population frame,sample size, sample selection, and estimation method in detail. Objective of the sampling design is to know the characteristic of the population.
A sampling frame is defined as the complete list or a map that contains all the "n" sampling units in a population
Random Sampling
You are correct; convenience sampling is not random sampling.
Sampling bias occurs when the sampling frame does not reflect the characteristics of the population which is being tested. Biased samples can result from problems with either the sampling technique or the data-collection method. Essentially, the group does not reflect the population which is supposed to be represented in the given survey or test. For example: If the question being asked in a survey was "do American's prefer Coca-Cola or Pepsi?" and all people asked were under 18 and from California, there would be a sampling bias as the sampling frame would not accurately represent "American's".
Samplig frame is the source material from which the sample is drawn. If you have a 'list' of names of all inviduals from which you could draw a sample, the list is a sampling frame. A samplig unit is the sample being chosen.
A sampling frame is crucial because it serves as the list or database from which a sample is drawn, ensuring that researchers can select participants who accurately represent the larger population. A well-defined sampling frame minimizes sampling bias and enhances the validity of survey results. It facilitates systematic data collection, allowing for more reliable and generalizable conclusions. Without a proper sampling frame, the quality of research findings can be severely compromised.
Answer is Quota sampling. Its one of the method of non-probability sampling.
because it is the simplest sampling technique which requires less time and cost.
Instantaneous sampling is one method used for sampling a continuous time signal into discrete time signal. This method is called as ideal or impulse sampling. In this method, we multiply a impulse function with the continuous time signal to be sampled. The output is instantaneously sampled signal.
what are the steps involved in the mark and re-capture method in population sampling