In statistics, the standard deviation (SD, also represented by the Greek letter sigma Ï or the Latin letter s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values.
How to Estimate Your Uber Fare. The fare you'll owe from the car service Uber will depend on various different factors such as city, distance, and type of car. You can use a few pieces of info to estimate it though.
How to Tip an Uber Driver. When using an Uber taxi ride, all required fees associated with your ride will be directly charged to your credit card. Your Uber fare includes a 20% tip only when you take UberTAXI, a partnership between Uber and existing taxi services. If you're riding in an UberTAXI, you can log into your Uber account online to edit and alter the percentage of tip charged to your account per ride.