About Jon Johansson

This author has not yet filled in any details.
So far Jon Johansson has created 22 blog entries.

“Standard Error” Error Bars in Excel

In previous articles we discussed adding fixed error bars and Standard Deviation error bars to Excel charts. The last option available on the Format Error Bars dialog is the standard error,  short for "standard error of the mean". Using the same data set that we used for the post Standard Deviation Error Bars in Excel, [...]

By |2020-12-14T17:36:39-07:00December 16th, 2020|Error bars, Excel, Tutorials and How-Tos|0 Comments

Error Bars in Excel

Error bars on a chart/graph provide a visual representation of our uncertainty of knowledge about the values of the data points. These are helpful in understanding the accuracy of our data and have the benefit of being relatively easy to interpret. We are going to discuss how to add error bars to charts in Excel [...]

By |2020-11-16T18:09:20-07:00October 22nd, 2020|Error bars, Excel, Tutorials and How-Tos|0 Comments

Instructor Led Online Teaching

Videoconferencing is fairly old technology now. There have been a variety of expensive commercial systems available, but the system that most people may be familiar with is probably Skype™ by Microsoft. Since 2003 Skype™ has allowed people to see and talk with friends, relatives and colleagues using computers and eventually tablets and phones. The software [...]

Encryption – Part 1 – The Caesar Cipher

Encryption is one of many Protective Technologies that help keep us safe while using the Internet. Today's encryption methods are quite sophisticated compared to those of the past, but before going into more modern methods, let’s look at the general concept.  Caesar Cipher: One of the oldest encryption methods require sharing a rule between parties [...]

By |2019-09-27T18:03:12-06:00October 9th, 2019|General, Internet, Remarks on Technology|0 Comments

The Technology Layer Cake: Users, Apps, OS and Hardware

Today's technologies have a lot in common, believe it or not. Whether you use your smartphone for most of your interaction with the Internet, or spend your day working on a laptop or a fancy desktop computer with lots of storage space and a powerful graphics card, these technologies have very similar structures. These devices [...]

By |2019-09-24T18:59:39-06:00September 25th, 2019|Devices, Operating Systems, Remarks on Technology|0 Comments
Go to Top