ToysGalore is researching customers’ opinions about prices on their new doll. Name each sampling method. . A representative stands at the store entrance and polls the first 75 customers b. A representative asks every 8th customer who enters the store
ToysGalore is researching customers’ opinions about prices on their new doll. Name each sampling method.
. A representative stands at the store entrance and polls the first 75 customers
b. A representative asks every 8th customer who enters the store
In simple random sampling procedure, each of the population unit has same chance of being included in the sample.
Convenience sampling: It is a non probabilistic sampling, where samples are selected according to their need to researcher. A convenient and easily accessible sample is selected from the population.
Voluntary response sampling: The respondents willingly or voluntary participate in the study and voluntary selected themselves as sample.
Stratified random sampling: First the population is divided into sub0groups, which are homogenous. Now, randomly a particular numbers of sample units are selected from each sub-group.
Multi-stage sampling: The hierarchical or relational structure of a large population is considered to collect samples through several stages, and it is considered the selection of smaller sampling units at each of the subsequent stages.
Systematic sampling: Consider the population size is N and the sample size is n. Initially a ratio k = N/n is needed to find; Now, a random number must be chosen between 1 and k. Them, every kth population unit can be included in the sample.
Cluster sampling: First the population is divided into naturally occurring groups called clusters. Here, each of the cluster is a representative of population. Now, a desired number of those groups, and every unit of the selected group is selected randomly and considered as sample.
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