Question

In: Statistics and Probability

1. Let's say there are 10,000 lawyers in the USA and 500 of them are Oreo...

1. Let's say there are 10,000 lawyers in the USA and 500 of them are Oreo cookie lovers. These 500 lawyers consume a total of 500 Oreo cookies in a given time period out of 2,000 cookies sold. What is the BDI for Oreo cookies consumed by lawyers.

      
1000      

500
       
100

50

2. In this sampling method we believe there are significant differences between groups comprising the population. Here we assign the population into groups and then try to replicate those percentages present in the population in our sample. As a result we randomly select people out of each group to try and get a representative sample from each of the groups of interest. Which sampling method is this?

      
Stratified

Purposive
  
Cluster
  
Systematic

3. Sometimes you may want to study a group of people that have very specific interests or behaviors. Once you find one individual you ask them if they have any friends you can talk to, you then ask the friend if they have any friends, and so on and so forth. This is called what?

      
Snowball sampling
  
Probability sampling
  
Convenience sampling
      
Branch sampling

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