Researchers are conducting a survey about what brand of ice cream shoppers prefer. they survey the tenth person who walks into the store and then every fifth person after that. this type of sampling is called random sampling. stratified sampling. systematic random sampling. cluster sampling.

Systematic random sampling.

Step-by-step explanation:

Given: Researchers survey the tenth person who walks into the store and then every fifth person after that. It implies that they are following a pattern of every tenth then fifth after that walk into the store.

Therefore, this type of sampling is systematic random sampling.

This sampling method is called systematic random sampling.

Researchers survey the tenth person who walks into the store and then every fifth person after that.

This type of sampling is called - systematic random sampling.

Systematic random sampling is a type of sampling method in which samples are selected from a larger population based on a random starting point that has a fixed and periodic interval.

This interval is called the sampling interval. This interval is calculated by dividing the population size by the desired sample size.

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step-by-step explanation:

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.