On your Mac, choose Apple menu > System Preferences, click Sound , then click Output. If your Mac has only one audio port, click the “Use audio port for” pop-up menu, choose Sound Output, then make sure your external speakers are selected.If they aren’t, try unplugging the speakers and then plugging them in again. How […]

The covariance between X and Y is defined as Cov(X,Y)=E[(X−EX)(Y−EY)]=E[XY]−(EX)(EY).The covariance has the following properties: Cov(X,X)=Var(X); if X and Y are independent then Cov(X,Y)=0; Cov(X,Y)=Cov(Y,X); Cov(aX,Y)=aCov(X,Y); Cov(X+c,Y)=Cov(X,Y); Cov(X+Y,Z)=Cov(X,Z)+Cov(Y,Z); more generally, What is the formula for calculating covariance? Covariance measures the total variation of two random variables from their expected values. Obtain the data. Calculate the […]

Auto Correction in Word 2010 Step 1 − Click the File tab, click Options, and then click the Proofing option available in the left most column, it will display the Word Options dialog box. Step 2 − Click the AutoCorrect Options button which will display the AutoCorrect dialog box and then click the AutoCorrect tab. […]

How to write a business memo List the purpose of the memo in the introductory paragraph. Be concise and keep the language positive throughout. Communicate the message of the memo in the subject line. Use the body paragraph and conclusion to break down your information. How do you write an introduction for a memo? Begin […]

Copy a page in a multiple-page document Place your cursor at the beginning of the page you want to copy. Click and drag the cursor to the bottom of the page you want to copy. Press Ctrl + C on your keyboard. Tip: Another way to copy your highlighted text is to click Home > […]

How to Convert Excel to JPG Online for Free Drag and drop your Excel file into the Excel Converter. Wait for the first conversion to finish, then click ‘to JPG. ‘ Wait for the second conversion to finish. Download your data sheet in JPG format. How do I save an Excel file as a JPEG? […]

How the Junk Email Filter works. The Junk Email Filter evaluates each incoming message to assess whether it might be spam, based on several factors. These can include the time when the message was sent and the content of the message. By default, the Junk Email Filter is turned on and the protection level is […]

adverb. As detailed above, ‘just’ can be an adjective, an adverb, a noun or a verb. Adjective usage: It is a just assessment of the facts. Adjective usage: It looks like a just solution at first glance. Adverb usage: Just follow the directions on the box. What type of word is the word just? adverbJust […]

When uploading photos from your digital camera to your computer, some shots may be improperly oriented, such as framed sideways. After uploading the photo to Facebook, the social networking website provides the tools necessary to rotate the photo so it displays properly. How do I stop Facebook distorting my photos? First, you should try to […]

Let’s say that we want to change this theme to some other theme offered in Excel. In the Ribbon, (1) go to the Page Layout tab, then (2) click on Themes and (3) choose an offered theme (for example, Slice). Applying the Slice theme changes the cell, object, and table formatting. How do I apply […]