= 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.
A videoscope is a flexible inspection instrument that consists of a flexible insertion tube with a video display at one end and an objective lens at the other.The image is produced using a CCD camera chip 1/10 th inch or smaller in diameter.The image is relayed from the inspection area to the video display electronically. An internal fiber optic light guide, or LED lighting at the objective, is used to illuminate the area being inspected.he image is relayed from the inspection area to the video display electronically. An internal fiber optic light guide, or LED lighting at the objective, is used to illuminate the area being inspected.