yes
It is called convenience sampling.
Chorionic Villus Sampling (CVS)
It is called one-stage cluster sampling. If random samples are taken within the selected clusters then it is two-stage cluster sampling.
chorionic villus sampling
Cluster Sampling
chorionic villus sampling
The device used to collect blood from a skin puncture is called a lancet. It is a small, sharp instrument used to prick the skin for blood sampling, typically for glucose monitoring or other medical tests.
They include: Simple random sampling, Systematic sampling, Stratified sampling, Quota sampling, and Cluster sampling.
Data can be collected for independent samples by randomly selecting individual units or cases from the population of interest. This can be done using random sampling techniques such as simple random sampling, stratified sampling, or cluster sampling. By ensuring that each sample is selected independently of the others, we can maintain the assumption of independence among the samples in the data analysis.
Answer is Quota sampling. Its one of the method of non-probability sampling.
Sampling techniques in researching involves to types of sampling. The probability sampling and the non-probability sampling. Simple random is an example of probability sampling.
You are correct; convenience sampling is not random sampling.