Standard deviation is a statistic that looks at how far from the mean a group of numbers is, by using the square root of the variance.Standard deviation is calculated as the square root of variance by figuring out the variation between each data point relative to the mean. How do you calculate the standard deviation? […]

Go to https://settings.webex.com and select the ellipsis on the top right of the identity card. Choose Delete account , and select Ok . When you click Ok , you’re signed out of https://settings.webex.com and your account is deleted immediately. How do I delete a paid Webex account? From your Overview page, click Change Plan. Select […]

The return address usually goes on the back flap of the envelope. Also, the return address used should be that of the person(s) whom you’ve designated to receive response cards, be it your parents or you (traditionally, whoever is hosting the wedding handles response cards). How do you address an RSVP envelope? Addressing the RSVP […]

Collapse is a term used to describe the process of hiding something or reducing its size, so it’s not visible. For example, when you expand a folder, it shows the folder’s contents. To hide the open folder’s contents, you’d collapse the folder. Tip. What happens when you collapse a folder? Expand/collapse symbols (+/-) appear next […]

Just do: Colors > Color to Alpha select Black. Click OK. How do you make a color transparent in Photoshop? Change Color to Transparent in Photoshop Select the Magic Wand tool and click on the areas of the image that you want to be transparent. Use the wand to select the entire background area. To […]

Change data types in Datasheet view Access opens the table in Datasheet view. Select the field (the column) that you want to change. On the Fields tab, in the Properties group, click the arrow in the drop-down list next to Data Type, and then select a data type. Save your changes. How do you change […]

Convert to a different file format Click Save As…. The Save Image window will pop up. In the name field, change the file extension to the file format you want to convert your image to. The file extension is the part of the file name after the period. Click Save, and a new file will […]

The following seven strategies will help you use power effectively: Treat all 360 degree leadership relationships as your most important customer. Listen 80%. Learn from others. Share real stories –business, family, personal. Be visible. Be generous. Clarify expectations. How do leaders use power? Leaders can use power to benefit others or to constrain them, to […]

Here’s how to remove the picture background or watermark from your slides. On the View menu, select Master > Slide Master. In the thumbnail pane on the left, click any slide layouts that have the picture watermark you want to remove. On the Slide Master tab, click Background Styles. Click Format Background. How do you […]

Chi-Square Test for independence: Allows you to test whether or not not there is a statistically significant association between two categorical variables.t-Test for a difference in means: Allows you to test whether or not there is a statistically significant difference between two population means. When should you use a chi-square test? A chi-square test is […]