Question

Anyone knows about level of measurements?

Answer 1

Level of measurement
Level of measurement refers to the relationship among the values that are assigned to the attributes for a variable.

Nominal - Values assigned to variables represent a descriptive category, however there is no inherent numerical value with respect to magnitude. No ordering of cases is implied. For example, Jersey numbers in basket ball are measures at the nominal level. A player with number 30 is not more of anything than a player with number 15, and is certainly not twice whatever number 15 is. They are the weakest.

Ordinal - Ordinal refers to order in measurement and indicates direction. Difference between attributes do not have any meaning. Attributes can be ordered.
Examples :
Rank - First, second,.... , last
Level of agreement - No, yes, maybe
Political orientation - Left, center, right

Interval - The interval or cardinal scale has equal units of measurement, thus making it possible to interpret not only the order of scale scores but also the distance between them, distance is meaningful.
Example : Time of day on a 12 hour clock.
When we measure temperature, distance from 30 - 40 is same as distance from 70 - 80. Ratios don't make any sense in interval measurements. 80 degrees is not twice as hot as 40 degrees

Ratio - Highest level of measurement is a ratio scale. It has the properties of nominal, ordinal, interval scale, a ratio scale has an absolute zero (a point where none of the quality being measured exists). Comparisons such as twice as high, one-half as much can be made.
Example : 14 o'clock is twice as long from midnight as 7 o'clock.
Ruler : Inches, centimeters.

Learn more about Measurements of Central Tendency http://goo.gl/Byf3kJ

Answer 2

Thank you for the very, very detailed explanation of the LOM! Lol, i asked this over a month ago. How did u find this question?