How to Draw a 3-D Chart
If you have 3-dimensional data, drawing a 3D chart can be very helpful in visualizing how the two variable jointly affect the outcome. In Microsoft Excel, such 3D charts are...
Category
visulization
Chance of Nothing Happening? The Power of Joint Probabilities
Yesterday, as I was reading a book about Blackstone, the famed asset management company, something caught my attention. It was about how one of its executives describing...
This Site Has Abundant Climate Data
I have always been fascinated by climate data. Just today while researching for data on this topic, I came upon the Berkley Earth website and found that it has warehoused...
What (and when) are the most popular US cities to visit?
For some business reasons, I need to check what the most popular tourists destinations in the US are. It is not hard to find such data. The US National Travel and Tourism...
All Great Boston Area Towns Benefitting from the Housing Boom? Not Quite So
I recently came across an interesting summary table on median condo prices in the Great Boston area (re-created in Excel below; original data from the Boston Magazine, whose...
How Advance do People Make Rental Car Reservations? The Result May Surprise You!
Spring break is upon us. Many students of mine are heading to exotic location, and quite a few of them have reserved rental cars many weeks earlier. But here is the question:...
How to Draw a Pareto Chart?
Pareto chart, put simply, is a sorted frequency chart. It is used mainly for identifying the most frequent occurrences in a collected sample. Some business-situation questions...
Sparkline (aka chart-in-a cell) really sparkles!
In many cases, you need to generate a series of graphs using Excel, and yet do not want to put them into one single picture. For example, you would like to draw the price...