HP provides a type of model name near the keyboard or screen, but this name or number is probably not sufficient to get proper support for your computer. These names or numbers often represent a series of many notebook computers that look similar, but have different options and parts.
Fundamentally, river sampling is a web-based convenience sample of opt-in participants that uses a quota sampling approach to build a study sample. The selection method is not probability based, and participants cannot be described as representing any larger defined population.
Comparing Convenience Sampling vs. Random Sampling. Though convenience sampling is a widely used method, there are other types that are commonly used. Random sampling is another form of sampling that differs greatly from convenience sampling, and is often used to gain a more accurate set of data from the population.