A reader need go no further than page two of Leland Wilkinson’s The Grammar of Graphics before reading, “We will also come to realize why a histogram is not a bar chart and why many other graphics ...

Histograms are often useful tools for analyzing digital data. To get reliable results from a histogram, though, you must collect large amounts of data, often with 100,000 to 1 million points. If you ...

Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician (CMT). Vikki Velasquez is a researcher and writer who has managed, coordinated, and ...

It’s easy to set exposure by eye. We’ve all done it. The problem is that the electronic viewfinder or LCD screen on your camera does not show a 100% accurate representation of what the sensor is ...