Question

In: Statistics and Probability

  A good sample should always be a simple random sample be at least 30 in size...

  A good sample should always

  1. be a simple random sample
  2. be at least 30 in size to accurately apply statistical methods
  3. be representational of the population
  4. have univariate data only
  5. all of the above

Solutions

Expert Solution

Answer:-

Given That:-

  A good sample should always

(a) be a simple random sample

(b) be at least 30 in size to accurately apply statistical methods

(c) be representational of the population

(d) have univariate data only

(e) all of the above

Solution:

(e) All of the above

A representation sample is a sample quantity of something that accurately reflects the larger entity. An example is when a small number of people accurately reflect the members of an entire population.

A simple random sample is a subset of individuals (a sample) chosen from a larger set (a population). Each individual is chosen randomly and entirely by chance, such that each individual has the same probability of being chosen at any stage during the sampling process, and each subset of k individuals has the same probability of being chosen for the sample as any other subset of k individuals.

Unlvarlate data has one variable. We also learned that bivariate data involves relationships between the two variables, while unlvarlate data involves describing the single variable.

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