Cluster sampling
Cluster sampling is done as follows:
Here is the Stata code to perform cluster sampling:
The output of this command will be as follows:
#Obs per Unit --------------------------------------------------- Stratum #Units #Obs min mean max -------- -------- ------ ----- ------ -------- 1 286 286 1 6.1 100 -------- -------- ------ ----- ------ -------- 1 286 286 1 6.1 100 ---------------------------------------------------
Here is the code for the mean of the estimation sample:
The output of this code will be as follows:
--------------------------------------------------------------
| Linearized
| Mean Std. Err. [95% Conf. Interval]
-------------+------------------------------------------------
Fridge_sales |560.5404 18.08756 540.1245 590.0987
volume |31.98367 2.983672 25.98367 40.00098
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