= 12. Semi-Interquartile Range. The semi-interquartile range of a distribution is half the difference between the upper and lower quartiles, or half the interquartile range. Therefore, from the example above, it was determined that the interquartile range = 12.
Electronic Viewfinders (EVFs) An EVF is basically a very small screen inside a viewfinder, so you can put your eye up to the viewfinder and use it like a traditional camera. On most cameras with EVFs you can switch the view between the viewfinder and the rear LCD screen interchangeably.
viewÂ·er. n. 1. One that views, especially an onlooker or spectator. 2. Any of various optical devices used to facilitate the viewing of photographic transparencies by illuminating or magnifying them. 3. A person who watches television or movies: viewers of prime-time shows; viewers of action movies.