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.
Survey Junkie makes it quick and easy to jump into the survey game. According to their websites, they say they are the most popular spot online to earn cash and rewards for sharing your thoughts, while that might not be technically true, they are one of the largest survey sites out there. They were launched all the way back in 2005 (which is pretty old for a survey site) and they have over 4,000,000 members. 

Amazon gift cards and PayPal are obviously popular choices, so naturally like most sites MySurvey had those. These guys did not stop there though. At the time of writing (I double checked) they also offer various sweepstakes, gift cards to restaurants, you can donate to charities like UNICEF through them, they have iTune gift cards, their very own merchandising products and also Starbucks, Walmart and Tango gift cards among many more options!
*NO PURCHASE NECESSARY. Open to legal residents of the 50 United States (D.C.) who are eligible to participate on a Survey Sampling International Panel and meet the minimum age requirement for the respective Panel. Quarterly drawings; enter by June 30, 2017 to be included in next drawing. To enter and for Official Rules, including odds, mail-in method of entry, and prize descriptions, visit www.opinionoutpost.com/en/policies/terms/prize-draw. Void where prohibited.
Alternatively, you might need to register with HMRC as newly self-employed, but if you're just doing a few for fun, you might not. It's worth giving them a ring on 0300 200 3500 to check if you're not sure. You need to register, so make sure you do so by the end of the third calendar month after you've started – or you could face an automatic £100 penalty.
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.

Post-recession, a lot of workers started looking for ways to earn extra cash. While most side gigs won’t supplant the steady cashflow of a regular job, they can pad a paycheck that hasn’t seen a significant boost in a few years. Paid surveys are often mentioned as one way to earn a few extra dollars fast. But are paid surveys a legitimate way to make money – or are they scams? The answer is that it depends on the survey and the company you are taking them for.
Ultimately, it is very unlikely that participating in online surveys will provide you with a steady, livable wage. However, if you enjoy participating in online surveys (especially if you like the prizes, coupons, and other more typical non-monetary earnings), be sure to avoid questionable third-party sites. Look for real paid surveys online that don’t require you to invest money.
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The free site screens you when you sign up, asking a range of questions so you can be sent the surveys which will be suitable for you. You can also join up with a social media account like Facebook or LinkedIn instead of using your email address. Filling out surveys for money with Opinion Outpost will first give you Opinion Points – with 10 points worth $1. Most surveys will take between 10 and 30 minutes and are worth anything from $1 to $5. Typical survey time is around 15 minutes, and participants are also entered into quarterly prize draws, touted to be for $10,000! However some people think their surveys don’t come around often enough, and completing some surveys will enter you into prize draws rather than paying out cash.
Like many survey sites, Toluna rewards you with points, which you can then cash out for vouchers for the usual suspects like Amazon and iTunes, or money through PayPal. A slightly novel element of the site’s payment plan is to offer the chance to take your points out early if you gamble them for prizes. While you have to store up a grand total of 60,000 points before you can claim vouchers for around $12 – something some people find to be a downside of the site – if you are willing to settle for a prize, you can play with just 500 points. You can decide to try your luck with a “giftie”, a kind of scratch card game. By gambling some points, you can see if you have won the gift or lost your points – so it is not one for the faint hearted!
The site will even allow you to monetise your internet searches, if you swap from Google or Safari to their own search engine. The Swagbucks search engine, which is actually running Yahoo, will pay you Swagbucks every time you search. For games, there are options like Scrabble and Wheel of Fortune, which won’t pay you much, but could be worth a go if you fancied playing a game anyway! Swagbucks TV allows you to watch advertising videos on a range of topics, including news, fitness and entertainment. There’s a snag – your earnings are capped at 150 Swagbucks, but it is worth a look if you’re prone to wasting time watching viral clips.
Renowned for its short and sweet surveys, OnePoll is a great site for dipping in and out of, without having to dedicate loads of time to. As one of the earliest survey sites to be set up, OnePoll certainly has longevity. Founded in the UK, it is open to US users and those further afield and runs polls for the press and leading brands. This means the content is more engaging than it can be elsewhere and you can find yourself answering questions about celebrities or gossip. Many users praise their surveys for being quick, and even better – fun! Topics are not as dry as they can be on other websites, and by keeping the surveys brief, OnePoll is less likely to leave you bored or frustrated.
By taking part in online surveys with Valued Opinions US, you can  tell brands exactly what you think  about their products and services. You can even get the opportunity to test new products and packaging, as well as reviewing advertising campaigns. Every time you take one of our paid surveys you're driving real change to help companies know what they need to do to improve - and earning credit for gift cards .
With over 20 million active members, Swagbucks is the premier destination for paid survey takers looking to earn money for giving their opinion online. Swagbucks provides access to tens of thousands of paid survey-taking opportunities every day. With every online survey, you are affecting key decisions from major companies and organizations. More survey opportunities means more chances to make your opinion count - and more earning potential for you! Unlike most other online survey sites, Swagbucks will even give you a bonus when you don’t qualify for a survey, meaning you never miss out on getting paid.
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