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.
On how much to tip your Uber driver Well the standard tip for a taxi is 15 to 20 percent. And that is my initial reaction: I would say tip 15 to 20 percent of the fare. But things get really dicey with Uber because they have dynamic pricing. What might be a $40 ride to the airport at three in the afternoon could be a $150 ride at peak time. Do you tip 20 percent on $150?