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Select a representative sample: Selecting a representative sample from your sampling frame is also important for collecting valid and reliable data about the population of interest. For example, if you are sampling from a large database of customer email addresses and only wanted one response per household, you might want to cross-check each email address against mailing addresses and remove duplicates to avoid some households having a greater probability of selection. Then you would likely draw a random sample from the remaining list of email addresses.
One of the most popular sites, and rightfully so, Swagbucks offers traditional surveys as well as a range of additional ways to make cash. Filling out surveys for money will reward you with points called Swagbucks which can be cashed out through PayPal, or redeemed as gift cards for shops including Amazon.com. As a sweetener, they’ll even give you $5 just for signing up.
It’s easy to earn cash for surveys. How much you get paid completely depends on how many paid surveys you attempt and complete. Each online survey has a different payout, with some offering as much as $50. Most will pay less, but also take less time. Expect to earn about 40 to 200 SB points per survey (100 SB = $1), with occasional opportunities with much higher earning potential.