Provide an Appropriate Response

question 84

Essay

Provide an appropriate response.
-A market researcher obtains a sample of 50 people by standing outside a store and asking every 20th person who enters the store to fill out a survey until she has 50 people. What sampling method is being used here? Will the resulting sample be a random sample? Will it be a simple random sample? Explain your thinking.

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Definitions:

Discrete Random Variable

A variable that assumes a finite number of unique values, typically signifying the results of a stochastic process.

Continuous Random Variable

A type of random variable that can take an infinite number of possible values within a given range, often associated with measurements.

Expected Value

The sum of all possible outcomes of a random process, each multiplied by its probability of occurrence.

Variance

A measure of the dispersion of a set of data points around their mean; mathematically, it is the average of the squared differences from the mean.