In one sentence, describe what the following article is about: Any statistical work is generally made easier by having your data in a concise format. A simple table serves this purpose very well. To calculate the standard error of estimate, you will be using five different measurements or calculations. Therefore, creating a five-column table is helpful. Label the five columns as follows: x{\displaystyle x} y{\displaystyle y} y{\displaystyle y^{\prime }} yy{\displaystyle y-y^{\prime }} (yy)2{\displaystyle (y-y^{\prime })^{2}} Note that the table shown in the image above performs the opposite subtractions, yy{\displaystyle y^{\prime }-y}. The more standard order, however, is yy{\displaystyle y-y^{\prime }}. Because the values in the final column are squared, the negative is not problematic and will not change the outcome. Nevertheless, you should recognize that the more standard calculation is yy{\displaystyle y-y^{\prime }}. After collecting your data, you will have pairs of data values. For these statistical calculations, the independent variable is labeled x{\displaystyle x} and the dependent, or resulting, variable is y{\displaystyle y}. Enter these values into the first two columns of your data table. The order of the data and the pairing is important for these calculations. You need to be careful to keep your paired data points together in order. For the sample calculations shown above, the data pairs are as follows: (1,2) (2,4) (3,5) (4,4) (5,5) Using your data results, you will be able to calculate a regression line. This is also called a line of best fit or the least squares line. The calculation is tedious but can be done by hand. Alternatively, you can use a handheld graphing calculator or some online programs that will quickly calculate a best fit line using your data. For this article, it is assumed that you will have the regression line equation available or that it has been predicted by some prior means. For the sample data set in the image above, the regression line is y=0.6x+2.2{\displaystyle y^{\prime }=0.6x+2.2}. Using the equation of that line, you can calculate predicted y-values for each x-value in your study, or for other theoretical x-values that you did not measure. Using the equation of the regression line, calculate or "predict" values of y{\displaystyle y^{\prime }} for each value of x. Insert the x-value into the equation, and find the result for y{\displaystyle y^{\prime }} as follows: y=0.6x+2.2{\displaystyle y^{\prime }=0.6x+2.2} y(1)=0.6(1)+2.2=2.8{\displaystyle y^{\prime }(1)=0.6(1)+2.2=2.8} y(2)=0.6(2)+2.2=3.4{\displaystyle y^{\prime }(2)=0.6(2)+2.2=3.4} y(3)=0.6(3)+2.2=4.0{\displaystyle y^{\prime }(3)=0.6(3)+2.2=4.0} y(4)=0.6(4)+2.2=4.6{\displaystyle y^{\prime }(4)=0.6(4)+2.2=4.6} y(5)=0.6(5)+2.2=5.2{\displaystyle y^{\prime }(5)=0.6(5)+2.2=5.2}
Summary: Create a five column data table. Enter the data values for your measured data. Calculate a regression line. Calculate predicted values from the regression line.

In one sentence, describe what the following article is about: If you apply for a work-from-home advisor position, you'll be a member of AppleCare (Apple's customer service team). Your job will be to give customers advice on Apple software, hardware, services, and accessories over the phone or in a chat window. You don't have to have extensive Mac experience, but you should have some experience troubleshooting other operating systems, such as Windows. It's helpful, but not necessary, to have specific experience solving Mac problems. Before you officially begin work as an At-Home Advisor, you'll receive 5-7 weeks of specialized training on how to address customer concerns. To become an AppleCare At-Home Advisor, you will need to have a clean, quiet desk space where you will be capable of focusing for the duration of a typical 8-hour work day. If you are hired, Apple will provide you with a company iMac and a headset, so don't worry if you don't already have a Mac. Whether or not you have a computer, you will be expected to have an internet speed of 10 MB/s for downloading and 1 MB/s for uploading. The application process for becoming an at-home advisor is about 1-2 months long, but it begins with an online application, much like retail and corporate positions. Investigate available positions on this webpage: https://www.apple.com/jobs/us/aha.html. Then, fill out an application for the one that suits you best. In your application, you'll be expected to answer some basic interview questions, such as why you want to work for Apple and what qualities you would bring to the position. You may also be asked to answer a few straightforward technical questions. If the hiring team thinks you're a suitable candidate, you'll be invited to join in a video interview that's about an hour to an hour and a half long. The main purpose of this interview is to gauge your technical abilities and problem-solving skills. You may encounter role-play situations in which you might have to respond to an interviewer pretending to be a customer with a specific problem. If you have limited experience with these kinds of interviews, you may want to practice answering basic tech support questions with a friend, perhaps even over Skype or another video chat platform. If your video interview goes well, a representative from Apple will inform you that you've been hired, and provide you with the details of your role. Then, you will be invited to begin training, which consists of an exhaustive 5-7 week course that you'll take from your at-home office. However, what you don't learn until you're "hired" is that you must hit performance benchmarks on tests that are given at the end of each week of training, or risk losing your brand-new job. If you pay attention and dedicate yourself to your training, you'll pass these tests and begin working in earnest. Trainers also use a number of strategies to ensure that you're engaged with training throughout the workday. They deliver regular prompts that you must respond to in 30 seconds, and also may call for a group video chat at any time. Stay at your desk, and you won't receive an awkward phone call asking why you didn't respond to messages or join in the video chat.
Summary:
Have prior troubleshooting experience with any operating system. Set up a productive workspace but don't worry about owning an Apple computer. Submit your application online. Be comfortable with and prepared for a video interview. Stay engaged and work hard during training.