advantages of using mean

Pollution can be anything - which damages the ecosystem and destroys the delicate balance in the ecosystem. Thereby, it creates health hazards to human beings and animals besides damaging the ecosystem. For e.g., industries polluting air has set imbalance in composition of air and made it unworthy ..

Friction aids walking. Our feet pushes the floor back and the floor pushes our feet forward, by using friction to do so (every action has equal and opposite reaction). Friction between tyres of vehicles and the road make controlled motion possible. Many machine parts stay in place..

The offsprings are genetically identical and therefore advantageous traits can be preserved. Only one parent is required which eliminates the need for special mechanisms such as pollination, etc. It is faster. For example, bacteria can multiply every 20 minutes. This helps the organis..

The offsprings are genetically identical and therefore advantageous traits can be preserved. Only one parent is required which eliminates the need for special mechanisms such as pollination, etc. It is faster. For example, bacteria can multiply every 20 minutes. This helps the org..

Dyes - Meaning and Characteristics - Colored substances used for dyeing fabrics are called dyes. A true dye must: Have a suitable color Be able to attach itself to the material from solution or be capable of being fixed on it Be fast to light and washing when fixed. For this it ..

Merits: 1. Mean deviation is easy to calculate. This measure is simple to understand. 2. This can be calculated from any average. 3. It is less affected by extreme observations. Demerits: 1. This is mathematically incomplete because it ignores negat..

1. sick - wal..

Look at the two sentences: She had her ears pierced yesterday. The quiet night was pierced by a shrill scream. The same word 'pierced' is used in the sentences in two different contexts. In the first sentence, pierce means bore, whereas, in the second sentence it means..

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..