INPUT ARTICLE: Article: Measuring correlation is a fairly standard calculation for statisticians. The calculation can become very tedious if done by hand for large data sets. As a result, many sources have made correlation calculators available online. Use any search engine and enter the search term "correlation calculator." Carefully review the instructions on the website so you will enter your data properly. It is important that your data pairs are kept in order, or you will generate an incorrect correlation result. Different websites use different formats to enter data. For example, at the website http://ncalculators.com/statistics/correlation-coefficient-calculator.htm, you will find one horizontal box for entering x-values and a second horizontal box for entering y-values. You enter your terms, separated only by commas. Thus, the x-data set that was calculated earlier in this article should be entered as 1,2,4,5. The y-data set should be 1,3,5,7. At another site, http://www.alcula.com/calculators/statistics/correlation-coefficient/, you can enter data either horizontally or vertically, as long as you keep the data points in order. These calculation sites are popular because, after you enter your data, you generally need only to click on the button that says "Calculate," and the result will appear automatically.

SUMMARY: Search the Internet for correlation calculators. Enter your data. Calculate your results.

In one sentence, describe what the following article is about: You want to snorkel in an area that has relatively calm waters and a vibrant mix of benign marine life. Shallow waters above coral reefs are great, as are some deeper spots best accessed by boat. Ask locals or check guidebooks to find the best spots that aren't too full of other swimmers. Even with a mask it's hard to see much underwater if the sky is dark and gloomy. Snorkel in the middle of a bright day when the water is clear of silt. Storms tend to churn up silt that clouds the water, so if it rained last night you may want to put your adventure off by a day. Seen one fish, seen them all? Not if you know what you are looking at. Memorize the shapes and colors of different kinds of fish that inhabit your local beaches and you can turn your simple swim into an aquatic zoological survey. If you see a fish you don't recognize, try to remember its patterns and look it up later.
Summary: Pick the right spot. Go out on a sunny day. Learn to recognize different fish and coral.

Read the manufacturer's instructions to familiarize yourself with your brace. The directions will describe the different parts of your brace and how it should be worn.. When in doubt, defer to the manufacturer's instructions over these directions, which are suited to most braces but not all. Undo the hook-and-loop fastener straps holding the brace together, and pull the opposite sides of the brace apart. The brace should be open so you can slide it over your arm easily. Thread your hand and forearm into the brace. Pull the brace up your forearm until the top of the supportive strap is approximately 1 inch (2.5cm) below your elbow. If the brace has a forearm splint in it, rotate the splint side so it is positioned on the thumb side of your arm. Move the brace so the cushioned area that will support your tendon is on the top of your forearm facing outward. This usually means that the strap compressing the tendon will be secured on the underside of your forearm Depending on the brace, this tendon cushion may be an air pack or foam. Use the adjustable strap to pull the brace snug now that it is in the proper position. You should be able to grip a racketor make a fistwithout the brace restricting your circulation. However, the brace should also be tight enough so it doesn't move around on your arm. Attempt the activity that causes you pain while wearing your brace. If it feels a little tight, loosen it. If it feels like it isn't giving you enough support, try tightening it. Adjust the brace so you feel the most relief. Wear your brace when performing your painful activity or while going about your entire day if you want more support. Wearing a brace will not hurt you, unless you've put it on incorrectly. If you feel unsure about putting a brace on yourself, consult a doctor, tennis pro, or physical therapist. They can all help you feel confident about wearing your brace.
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One-sentence summary -- Read the manufacturer's directions. Open up the brace. Slip the brace onto your arm. Position the elbow brace with the tendon cushion facing out. Tighten the brace until it is snug but not uncomfortable. Make any adjustments for comfort, as needed. Wear the brace whenever you need additional support.

INPUT ARTICLE: Article: Even if you have enough fat in your diet, you still won't absorb vitamin A well if you have a medical condition that limits your body's ability to absorb the fats you eat. Crohn's disease, irritable bowel syndrome, celiac disease, disease of the liver or gall bladder, cystic fibrosis, and problems with your pancreas can affect your fat absorption. These will require treatment or additional vitamin A supplementation to get your RDA of vitamin A. How you absorb fat is also decreased if you have had part or all of your stomach removed, such as after certain kinds of weight-loss surgeries. Alcohol can interfere with your body's ability to absorb vitamin A (and other needed nutrients).Stop drinking alcohol altogether, or limit your alcohol intake to, say, one glass daily to maintain good health and promote vitamin absorption. The prescription medication Orlistat is used to help people lose weight, but because of how it works it can interfere with the absorption of fat-soluble vitamins, including vitamin A. Olestra, a fat substitute sometimes added to food, can cause similar problems. Avoid these if you require a vitamin A supplement. If you are at risk for vitamin A deficiency, speak to your healthcare provider about any medications that you are taking. Some cholesterol medicines called bile acid sequestrants, like cholestyramine and colestipol, can block vitamin A absorption; another kind of cholesterol medicine, called statins, can actually help vitamin A absorption. Omeprazole (Prilosec) is used for heartburn and reflux, and can cause absorption issues, as can the antibiotic Neomycin. Switching to different medicines with your doctor's advice can help. Discuss your medicines and your vitamins with your doctor, to avoid any interactions. Say something like, "My dietician wants me to take a vitamin A supplement. Will that cause any problems with the medicines you prescribe to me?"

SUMMARY:
Treat digestive conditions medically. Drink less alcohol. Avoid weight-loss medications. Change your medicines that block vitamin A absorption.