frequency density distribution example

The number which tells us how many times a particular data appears is called the frequency. For example, 2 marks have been scored by five students which means marks 2 occurs five times. Therefore, the frequency of score 2 is five. Similarly, the frequency..

A teacher gave a test to a class of 26 students. The maximum mark is 5. The marks obtained by the pupils are: Such data as above is called ungrouped (or raw) data. We may arrange the marks in ascending or descending order. The data so represented is called an array. The difference between the great..

Cumulative Frequency Distribution - Cumulative frequency is obtained by adding the frequency of a class interval and the frequencies of the preceding intervals upto that class interval. This is explained by an example below. The following ..

"For a string of a given length and diameter and under constant tension, the frequency is inversely proportional to the square root of the density of the material of the string..

Metals have high density and are very heavy. Iridium and osmium have the highest densities where as lithium has the lowest density..

The density of a substance remains the same under certain specified conditions. Thus the density of a substance is one of its characteristic properties and this property can be used to determine the purity of any substanc..

0.5 kg of cotton occupies more space than 0.5 kg of iron. The particles of iron are closely packed while that of cotton are loosely packed. The amount of iron packed in a unit volume is more. This explains as to why iron is heavier than the same volume of cotton. In Physics, we describe the lightne..

Alkaline Earth metals are denser and harder than the alkali metals of group. 1. The comparatively smaller atomic size of alkaline Earth metals leads to more closely packed crystal lattices and hence stronger metallic bonds. This accounts for their increased hardness and high density...

The density of the members belonging to this group is found to increase down the group as usual. Explanation: It is because of the increase in mass per unit volum..

.3 g cm - 3 (19300 kg m - 3 ). If the mass and volume of a substance can be measured, its density can be calculated using the formula Let us take a piece of wood which has a volume of 1000 cm 3 and a mass of 600 g. Then its density = 0.6 g cm - 3 (600 kg m - 3 ) A piece of alumi..