First, you must specify a BY variable when you load the data. For instructions, see Grouping Observations with a BY Variable. Use a visualization technique to display an image, such as a cutting plane ...

JavaScript variables hold a wide variety of information and can be used with virtually any data type. Here's how to use variables to store numbers, text strings, objects, and more.

NASA's Hubble Space Telescope captured a bright variable star, V 372 Orionis, and its companion in this festive image in this ...