mean & variance

Mean - Mean is the arithmetic avera..

Mean is the arithmetic average. To find mean of ungrouped data and it is obtained by adding the raw scores and dividing the sum by the number of items. There are three methods to find mean for a frequency distribution. (i) Direct method, (ii) Short-cu..

Fossil fuels are energy-rich, combustible forms of carbon or compounds of carbon formed by the decomposition of biomass buried under the Earth over millions of year..

Separation of petroleum into simpler fractions after the removal of unwanted material..

Meaning of Heredity - Heredity may be defined as the transmission of characteristics through generations. The characteristics include all physical, physiological and psychological characteristics in organisms. All these characteristics are called the trai..

Arithmetic Mean (A.M.) - 1. If a, x, b are in A.P, then x is called the arithmetic mean (A.M.) between the extremes a and b. 2. a. To insert n arithmetic means between two given quantities. Let a and b be any two given quantities, and let A 1 ,A 2 ,A 3 ,-----A n be n a..

Respiration - Meaning - Respiration can be broadly defined as "the breakdown of organic compounds into simpler compounds accompanied by the release of energy in the form of ATP" Since most often the substrate is glucose, the general equation for respiration can be written as follows: C 6 ..

Heredity may be defined as the transmission of characteristics through generations. The characteristics include all physical, physiological and psychological characteristics in organisms. All these characteristics are called the trai..

Respiration can be broadly defined as the breakdown of organic compounds into simpler compounds accompanied by the release of energ..

Let A (a,f (a)) and B (b,f (b)) be two points on f (x), then ..