INPUT ARTICLE: Article: You will need this to find the standard deviation for your sample. Remember, variance is how spread out your data is from the mean or mathematical average. Standard deviation is a similar figure, which represents how spread out your data is in your sample. In our example sample of test scores, the variance was 4.8. This figure is the standard deviation. Usually, at least 68% of all the samples will fall inside one standard deviation from the mean. Remember in our sample of test scores, the variance was 4.8. 4.8 = 2.19. The standard deviation in our sample of test scores is therefore 2.19. 5 out of 6 (83%) of our sample of test scores (10, 8, 10, 8, 8, and 4) is within one standard deviation (2.19) from the mean (8). This will allow you to check your answer. It is important that you write down all steps to your problem when you are doing calculations by hand or with a calculator. If you come up with a different figure the second time around, check your work. If you cannot find where you made a mistake, start over a third time to compare your work.

SUMMARY: Find your variance figure. Take the square root of the variance. Go through finding the mean, variance and standard deviation again.

INPUT ARTICLE: Article: Dust mites love high humidity. The easiest way to decrease the humidity in your house is with a dehumidifier. You can also decrease the humidity by opening windows on dry days. Always use fans and vents when cooking, showering, and other activities that create steam. By reducing the humidity in your house, you can create an environment that's not ideal for dust mites, and you will slow down how quickly they reproduce. Install a hygrometer to keep an eye on the humidity, and keep the level below 50 percent. Dust mites also love high temperatures. The ideal temperature for them is between 75 and 80 F (24 and 27 C). In winter, set your thermostat to 70 F (21 C), and even cooler in the bedroom if that's comfortable. In summer, use fans, windows, and air conditioning when necessary to keep your house cooler. Disinfectants like Lysol are ideal for killing dust mites, and will make your home inhospitable to them. After your regular dusting, spray the disinfecting spray everywhere that dust tends to collect, including: Corners Baseboards Floors Shelves Curtains Near furniture Certain essential oils, and eucalyptus specifically, are effective at killing dust mites. There are a few ways you can use eucalyptus around the house to make your home unfriendly for dust mites, including: Add 20 drops of eucalyptus oil to your washing machine, especially when you're using a cold or warm water setting. Pour about 30 drops of eucalyptus oil into a spray bottle and fill the bottle with water. Use the spray around the house, including on your bed, furniture, pillows, toys, carpets, and other areas where dust mites live.

SUMMARY: Reduce humidity levels in the house. Turn down the temperature. Spray your home with a disinfecting spray. Use eucalyptus.

INPUT ARTICLE: Article: Place your mat on a flat, smooth surface. Make sure that you set up in a quiet place, and in an area with enough space for movement. If you do not have a Pilates mat, try doing the exercise on a carpeted area or use a towel. Use a thicker mat if you have a sensitive back. Try to find a well lit space with natural light. Wear comfortable clothing that allows movement. Shoes and socks are not needed. Push your chin into your chest, ensuring your neck remains long. Press your back flat against the floor. Make sure it is not in a neutral position. A neutral back position allows you to maintain the natural curve of your spine while lying down. The flat position you want to achieve with your back is called an imprinted spinal position. Do not use too much force while keeping your shoulders pressed down. Pull them away from your ears, and allow your arms to rest next to your body. Place your hands palm-down on the mat, fingertips stretched towards the bottom of the mat. Raise your legs upwards until they are vertically above your hips, forming a 90 degree angle with your body. Keep your upper thighs and knees together. Point your toes towards the ceiling.

SUMMARY: Set up your mat. Lie down on your back on your Pilates mat. Relax your shoulders. Extend your legs straight in front of you.

INPUT ARTICLE: Article: When it comes to headaches, they are very often triggered by certain foods or drinks. Once you notice a headache coming on, write down everything you recently drank or ate. This is important, as it will give you more information to consider when you look for patterns and triggers later. Some foods you might want to pay special attention to include: Aged foods Alcohol, particularly red wine Processed, fermented, or cured meats Food or drinks that are overly cold (like iced tea or ice cream) Smoked or dried food Caffeinated products MSG Chocolate Fish or shrimp Miso soup or yeast extract In addition to foods and drinks, medications and other substances can trigger the onset of a headache. As a result, you should record any medicine or substances you used prior to the onset of a headache. If you smoke tobacco or marijuana, record when you used them. If you're on a prescription medication for anxiety, depression, sleep problems, or anything similar, write down when you took them and how they impacted you. If you use a medication (prescription or over the counter) to treat your headache symptoms, record how well it works. Include herbal medicines Headaches can also be triggered by certain activities that you do every day. As a result, you should record what activities you engaged in prior to the onset of your headache. Pay attention to: Exercise habits Sleep habits Stress levels Places you visited prior to the onset of the headache. There is a chance your headaches could be triggered by the presence of mold, mildew, or chemicals in the air at a given location. Anything unusual you experienced before you got the headache.

SUMMARY:
Track what you eat and drink. Note what medications or other controlled substances you used. Record your activities.