Lab Assignment Week 3
A sample is a randomly selected part of a population. This technique is used to determine
the population’s interests. In order to have a proper sample, every member of the population
must have an equal chance of being selected for the sample. Sampling must be unbiased,
meaning there is not to be any favorites. The members of the sample are also to be chosen
independently. There are five different methods for sampling. The five methods are simple
random, convenience, systematic, stratified and cluster. There are different difficulties of
sampling that are factored into each method. The most difficult step is determining which
method should be used. This is based on the nature of the population and the resources that are
available (2012, March 13). Resources would include the time available and money time and
Critical thinking allows an individual’s to properly process and understand different
concepts by using reasoning and logic. The process involves breaking down a claim by
answering the questions of “who”, “what”, “where”, “when”, “why”, and “how”. Research is
benefited by the use of critical thinking because the skill requires individuals to invest time to
properly break down information. Critical thinking can be applied in statistics. To apply critical
thinking to statistical information like polls, the four basic critical questions must be asked. The
following questions are asked:
What is being claimed?
How good is the evidence?
What other information is relevant?