data measurement
121generation — (gen) an informal unit of time. Roughly speaking, a generation is the average length of time between the birth of a parent and the birth of the child. This leaves a question, however: should just the father, or just the mother, or both parents …
122hexit — a unit of information equal to 4 bits or 1/2 byte. A string of 4 bits has 16 possible states (0 15) and is usually represented as a single base 16, or hexadecimal, digit (in the hexadecimal system the letters A through F are used to represent… …
123kilobit per second — (kbps, kb/s) a unit of data transmission rate equal to 1000 bits per second. The symbol kb/s is preferable to kbps for this unit …
124nautical mile — (nmi, naut mi, n mile, or NM) a unit of distance used primarily at sea and in aviation. The nautical mile is defined to be the average distance on the Earth s surface represented by one minute of latitude. This may seem odd to landlubbers, but …
125percentile — a unit used in statistics to describe a portion of the individuals or events being studied. Suppose the data are arranged by numerical scores, from highest to lowest. A score belongs to the 78th percentile, for example, if it is greater than… …
126quadbit — a unit of information equal to 4 bits or 1/2 byte. This unit is used in telecommunications, where data is frequently transmitted in quadbits. In other contexts, the same unit is called a tetrad, a nibble, or a hexit …
127sound transmission class — (STC) a rating of the ability of building materials to stop the transmission of unwanted sounds. The rating is designed so that it expresses, as best one can with a single figure, the sound transmission loss in decibels when sound passes… …
128word — 1. a unit of information in typing. Typing speed is usually expressed in words per minute (wpm). For this purpose, a word is considered to be exactly 5 characters (spaces included). For example, a typing speed of 30 wpm is equivalent to 150… …
