Missing data can be informative. Sometimes missing values in one variable are related to missing values in another variable. Other times missing values in one variable are independent of missing values in other variables. As part of the exploratory phase of data analysis, you should investigate whether there are patterns
Monday, April 18th is Tax Day, aka, National Identity Theft Day. OK, that part’s not true, but as millions of taxpayers go online to file taxes, it may as well be. The majority of taxpaying citizens file online, using services such as the popular TurboTax, H & R Block, and
Are you afraid that if you take a ride in a taxi, you might get "taken for a ride"? If trying to figure out the reasonable price of a taxi is a bit voodoo/black-box to you, here is a SAS data analysis of over 12 million NYC Yellow Cab rides, that
