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A retail company wants to estimate the average customer satisfaction across all 50,000 customers. They assign each customer a unique ID from 1 to 50,000 and use a random number generator to select 400 customers. What type of sampling is this, and why is it preferred over asking the first 400 customers who enter a store?
A retail company wants to estimate the average customer satisfaction across all 50,000 customers. They assign each customer a unique ID from 1 to 50,000 and use a random number generator to select 400 customers. What type of sampling is this, and why is it preferred over asking the first 400 customers who enter a store?