What Is Variance? “Variance” is a way to measure the average distance from the mean. The “mean” is the sum of all values in a dataset divided by the number of values. Variance gives us an idea of whether the values in that data set tend, on average, to stick uniformly to the mean or scatter all over the place. Mathematically, variance isn’t that complex: So as you can see, it’s not a hard value to calculate....

We’ll show you how to change your current profile picture in your Google account. How to Change Google Profile Photo on the Web For most people, the fastest way to add a new profile picture is via the Google account page on the web. You can use any desktop browser on your Microsoft Windows, Mac, or Linux machine for this method. To change your Google profile photo, visit https://myaccount.google.com and sign in....

Even if you have a new account on Instagram, you can quickly change your username or public name to correct typos, or to use a more search-friendly name for your account. We’ll cover how to change your Instagram name on desktop, mobile website, and on the Instagram app. How to Change Your Instagram Name on the Website To change your Instagram display name using its desktop website, go to Instagram....

Like many, you’ve probably had your Facebook account for years now and might not remember some of the most heart-warming posts that you shared on the network. Even if you do, scrolling down to find that specific memory or a picture of you with a friend might be challenging. Instead, here’s how to use the Memories tool to find your memories on Facebook. How to Find Memories on Facebook Facebook Memories is a tool that allows you to see what you did (or rather – what you posted) on the same day years ago, back to the day you’ve created your Facebook account....

Anyway, this happened to me last night and it took me about 20 minutes to fix the problem, so I thought I would write up how I ended up fixing it! Hopefully, you read this before thinking it’s some problem with Windows or with your DVD drive, etc as I have seen some people re-install Windows or get a new DVD drive because of this error! Actually, the problem all comes down to something called codecs....

The good news is that you don’t have to go back to paying for premium or basic cable. In fact, there are a few ways to get free cable TV channels or something close to it while still leaving that cord safely cut and your cable bill at zero dollars. What Hardware Do You Need for Free Cable? Most of the free cable solutions require internet service and a compatible device....

I guess Microsoft didn’t think about that issue when the released Windows XP. Nor did they add the option in Service Pack 3, the last major non-security update to XP. By default, the thumbnails in Windows XP look like this: That size is simply not large enough, especially for anyone with vision problems! Luckily, there’s an easy way to modify these settings so that the thumbnails can be any size you want up to 256×256....

However, permanently getting rid of the contents within the Trash isn’t always that easy and may result in errors. So if you run into any trouble, you can quickly empty the Trash in macOS using Terminal instead. You’ll find the complete procedure below. Delete the Trash in Mac Using Terminal (macOS El Capitan and Later) If you use a Mac running macOS 10.11 El Capitan or later (such as Big Sur or Monterey), you can quickly empty the Trash using Terminal....

There are many ways to go about removing a background from images and all of them will give you different results. The best thing is to try a couple of different methods on your picture and see which one gives you the best results. In this post, I’m going to write about three methods: using PowerPoint, using a website called ClippingMagic and using an app on your Android or iOS phone called Background Eraser....

As part of the fight against cyberbullying, Instagram launched some new privacy and security features, among them the ability to restrict certain accounts. Individuals, businesses, and brands can now take control of the comment section on their posts, so make sure to also check out if someone restricted you on Instagram. What Is the Restrict Function on Instagram? Cyberbullying was a major issue on Instagram, so the developers created the restrict feature to give users a tool to protect themselves from unwanted interactions....

Also known as ephemeral messaging, these messages ensure that any content you send is erased within minutes or seconds of consumption. This happens on both devices, plus on the system servers without storing lasting records of the conversation. Multiple technologies like encryption and strong password walls are used together to send, code, receive and destroy texts, photos or videos and other attachments. Self-destructing messages are attractive and popular, especially with the younger generation, but, adults use them for their personal privacy....

PayPal is useful for anyone who doesn’t want to add their financial information to every website or track every purchase made online. PayPal is a great way to maintain financial privacy and make convenient transactions without the security vulnerability that comes with entering credit card or bank account information for every purchase. If this is your first time learning how to set up a PayPal account, it doesn’t require as much time or effort as you’d think....

These days, the use of public computers is relatively rare in the Western world. Regardless, there’s a good chance that, at some point, you’ll be put in a position where you need to use a public computer. Maybe your phone is dead or stolen? Maybe you are in another country and have no coverage or WiFi access? At this point that hotel or internet cafe computer might look like a lifesaver....

With Google Chrome, you can create tab groups as a way to solve this problem. This lets you collect a set of related tabs and apply a group name. Then, expand or collapse that group as needed. Let’s walk through Chrome tab groups so that you can get your tabs under control. Create a New Tab Group in Chrome Select one of the Chrome browser tabs you want to place in a group....

To start with, you will need to have your PowerPoint presentation as well as the other file that you want to link to. In this example, we will be linking two PowerPoint presentations together and jumping immediately to Slide 2 on the second presentation. Link Multiple PowerPoint Presentations Step 1: Find or create the object that you want for your link. This could be a picture, clipart, text, etc. Select that object and click on the Hyperlink button under the Insert tab....

In this article, we’ll list the features of and differences between Samsung Pay and Google Pay and describe which mobile payment app is most worth using. What Is Google Pay? Google Pay, formerly known as Android Pay, is a mobile payment app that you can use to make purchases, as well as send and receive money. To use it, all you have to do is unlock the phone and tap it against the contactless payment terminal....

For me, being able to access the different drives on the computer and my network devices was far more important than accessing frequently used folders or recently opened files. It’s a useful feature, but I don’t mind having to click once to access it. In this post, I’ll show you how to change the default folder from Quick Access to This PC when opening Explorer. In addition, I’ll also show you a trick whereby you can set any folder to be the default folder when opening Explorer in Windows 10....

If you like to use your PC late at night, it’s a good idea to make sure you have a blue light screen filter. One of these devices will stop blue light from reaching your eyes and throwing your circadian rhythm into a samba. The Best Blue Light Screen Filters for Your PC Monitor There are a lot of generic options on the market that may not entirely block out blue light, or they may block too many spectrums and make it even harder to see your screen....

The developers call it a “wide-spectrum content blocker” rather than simply an ad blocker, and for a good reason. uBlock Origin is one of the most advanced and versatile options for increasing your privacy online with minimal cost to your CPU or memory usage. What Is uBlock Origin? Developed by Raymond Hill (gorhill on GitHub.com), uBlock Origin (uBO) is an industry-leading cross-platform browser extension for filtering content online. Unlike similar plug-ins, uBO filters content, including ads, trackers, pop-ups, malware, coin miners, and JavaScript elements....

At some point, this changed and they created a post-by email address, which was unique for each account. Using this email, you could update your status, post pictures from your phone, etc. However, as more and more users moved to the Facebook app on Android, iOS, Windows Phone, etc, the need to have this alternate mode of posting slowly waned. Now Facebook has something called Facebook Texts, which lets you update your status and do a couple of other things over text message....