Question

A political scientist is interested in the effect of government type on economic development. She wants to use a sample of 30 countries evenly represented among the Americas, Europe, Asia, and Africa to conduct her analysis. What sampling method should she use to ensure that countries are selected from each region of the world

Answer 1

Using sampling concepts, it is found that she should choose a stratified sample.

Samples are classified as:

• Convenient: Sample drawn from a conveniently available pool.
• Random: Basically, put all the options into a hat and drawn some of them.
• Systematic: Every kth element is taken.
• Cluster: Divides population into groups, and each element of the groups are surveyed.
• Stratified: Also divides the population into groups. However, surveys onle some elements.

In this problem, the countries are divided into groups according to their continent. It is not feasible to survey the entire population of all these countries, thus only some elements of the samples are surveyed, which means that an stratified sample is adequate to this situation.

A similar problem is given at https://brainly.com/question/24342347