In one sentence, describe what the following article is about: For any set of data values, the mean is a measure of central value. Depending on the type of data, the mean tells you the central value of that data. To find the mean, you must first collect your data, either through an experiment of some sort or just from an assigned problem.  For this example, use the assigned data set of 6, 7, 10, 12, 13, 4, 8 and 12. This set is small enough to count by hand to find that there are eight numbers in the set. In statistical work, the variable N{\displaystyle N} or n{\displaystyle n} is commonly used to represent the number of data values. The first step of finding the mean is calculating the sum of all the data points. In statistical notation, each value is generally represented by the variable x{\displaystyle x}. The sum of all values is symbolized as Σx{\displaystyle \Sigma x}. The capital Greek letter sigma signifies finding the sum of the values. For this sample data set, the calculation is: Σx=6+7+10+12+13+4+8+12=72{\displaystyle \Sigma x=6+7+10+12+13+4+8+12=72} Finally, divide the sum by the number of values. The Greek letter mu, μ{\displaystyle \mu }, is commonly used to represent the mean. Therefore, the calculation of the mean is: μ=ΣxN=728=9{\displaystyle \mu ={\frac {\Sigma x}{N}}={\frac {72}{8}}=9}
Summary: Collect and count your data. Find the sum of the data values. Divide to find the mean.

In one sentence, describe what the following article is about: You can either use a microwave-safe bowl or create a double boiler. Stir the chocolate to make sure everything is melted evenly. Prick them in the center, just enough to pick them up from the parchment paper and hold.  If you're wanting to present the cake balls on a stick, it's recommended that you use lollipop sticks; these can be found in specialty baking aisles. Dip about 1/2 inch (1.27 cm) of the stick into the melted chocolate prior to inserting them into the cake balls. If you're wanting to present the cake balls in decorative individual wrappers, poke them with toothpicks. While holding the lollipop stick or toothpick, submerge the cake ball into the melted chocolate. When lifting it back up, gently lift them in a swirling motion or give them a gentle shake. If you are using toothpicks, remove them from the balls. Add a very small amount of extra melted chocolate to cover the holes. You can use the back of a spoon to evenly spread out any extra coating as well. Place the chocolate covered cake ball in the same place on the waxed paper. Pick up the next one and repeat the dipping until everything is covered.
Summary: Melt the chocolate. Insert sticks into the cake balls. Dip the cake balls. Repeat with the rest.

In one sentence, describe what the following article is about: People don't want to pay more than this for a book at a yard sale, unless it's a beautiful hardcover coffee table book. Display your books spine-out in an attractive box or on a bookshelf that's also for sale. You may want to consider having a laptop or DVD player handy so people can make sure the DVDs work before they fork over the cash. Display the DVDs in their original cases. Keep in mind that CD sales have gone down, so these aren't the hot commodity they used to be. You could try to sell bundles of CDs by the same artist for a little more if your aim is to sell them off as quickly as possible.  If you have cassette tapes, go even lower; these probably won't move for more than $1.    {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/94\/Price-Yard-Sale-Items-Step-7Bullet1.jpg\/v4-460px-Price-Yard-Sale-Items-Step-7Bullet1.jpg","bigUrl":"\/images\/thumb\/9\/94\/Price-Yard-Sale-Items-Step-7Bullet1.jpg\/aid670525-v4-728px-Price-Yard-Sale-Items-Step-7Bullet1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"<div class=\"mw-parser-output\"><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/3.0\/\">Creative Commons<\/a><br>\n<\/p><p><br \/>\n<\/p><\/div>"}  Sell records at $2 - $3, unless you have a very rare record that is still in good condition (in which case you may want to consider taking it to a record store to trade it in - you might make more cash that way).    {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/43\/Price-Yard-Sale-Items-Step-7Bullet2.jpg\/v4-460px-Price-Yard-Sale-Items-Step-7Bullet2.jpg","bigUrl":"\/images\/thumb\/4\/43\/Price-Yard-Sale-Items-Step-7Bullet2.jpg\/aid670525-v4-728px-Price-Yard-Sale-Items-Step-7Bullet2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"<div class=\"mw-parser-output\"><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/3.0\/\">Creative Commons<\/a><br>\n<\/p><p><br \/>\n<\/p><\/div>"} Some rare or expensive games might sell for more, but in general your games won't go for more than $10. Make sure your magazines are cheap, especially old ones, $0.50 or $1 are most appropriate
Summary:
Price books at $1. Price DVDs at $5. Price CDs at $3. Price games at $5 - $10.