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Author Question: Explain stratified sampling and state its advantages. What will be an ideal ... (Read 28 times)

LCritchfi

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on: Jun 24, 2018
Explain stratified sampling and state its advantages.
 
  What will be an ideal response?

Question 2

What is the value of F?
 
  A) 484.67
  B) 727.00
  C) 246.33
  D) 198.83


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AmberC1996

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Reply #1 on: Jun 24, 2018
Answer to Question 1

In stratified sampling, the N individuals or items in the population or frame are first subdivided into subgroups, or strata, each according to some common characteristic. A simple random sampling is conducted within each stratum, and the results from the separate simple random samples are combined. Such sampling methods are more efficient than simple random sampling because they include the representation of individuals or items across the entire population, which ensures a greater precision in the estimates of underlying population parameters. The homogeneity of individuals or items within each stratum provides the precision.

Answer to Question 2

D


LCritchfi

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Reply 2 on: Jun 24, 2018
Gracias!

Sarahjh

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Reply 3 on: Yesterday
Wow, this really help

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