Median vs mean vs mode

Median vs mean vs mode

I do a lot of statistical analysis in my day job. Though my job title is no longer security analyst, I literally analyze computer security issues and make recommendations for a living. You couldn’t study information security when I was in college, because the field barely existed then. My formal training is in journalism. But my journalism degree means I have more formal training in statistics than most people I know. So let’s look at median vs mean vs mode, and when to use each of them.

Median, mean, and mode are three different approaches to trying to answer the same question. Out of all the numbers you collected, what is typical?

Read more

Ryobi battery won’t charge? Two possible fixes

Ryobi battery won’t charge? Two possible fixes

I hate when this happens. I’m at the end of a project, I take the battery out of whatever Ryobi tool I was using, put it on the charger, and get that infernal flashing red light. Why are Ryobi batteries so bad? Here’s what to do when your Ryobi battery won’t charge.

Sometimes your Ryobi battery won’t charge just because it’s too hot. Other times it’s because it’s discharged too far, in which case, you may be able to jumpstart it to bring it back to life.

Read more

Commodore 1571 disk drive

The Commodore 1571 was Commodore’s successor to the notorious 1541 disk drive. It addressed many of the shortcomings of the 1541, partly because Commodore had more time to get it right this time. It was the same color and style as the C-128. And they worked as well together as they looked together. It was a high-end drive, but I hesitate to call it Commodore’s top-end 5.25-inch drive. I’d give that distinction to the SFD-1001.

Commodore introduced the 1571 in 1985 at a price of $299 US. It was a double-sided, double density 5.25-inch disk drive that was faster than the 1541 when you used it with the 128, and maintained good backward compatibility with the 1541 when needed.

Read more

Is investment property tax deductible?

Is investment property tax deductible?

I’m a landlord, so I can vouch that there are certain tax advantages to investment property. But it can be a bit complicated. Here’s one question that isn’t as straightforward as it sounds: Is investment property tax deductible?

You can’t write off the purchase price of your property on next year’s taxes. What you can do is depreciate the costs of the property over a span of 27.5 years, so that’s why I say the question of whether investment property is tax deductible isn’t a simple yes/no question.

Read more