In order to obtain a random yet representative sample with minimal cost, many pollsters use which of the following tools?

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Random-digit dialing is the most effective tool for obtaining a random yet representative sample with minimal cost. It involves generating telephone numbers randomly and contacting individuals to participate in the poll. This method ensures a diverse sample and avoids any bias that may occur with self-selected or convenience sampling methods. Straw polls and exit polls are useful in specific situations but may not be representative of the overall population. Self-selected listener opinion polling relies on individuals voluntarily participating and may result in a skewed sample.

In Order to Obtain a Random Yet Representative Sample with Minimal