frequency distribution table online tutoring

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 of mark..

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 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 frequency distribution table gives t..

In a frequency distribution, the mid-value of each class is obtained. Then on the graph paper, the frequency is plotted against the corresponding mid-value. These points are joined by straight lines. These straight lines may be extended in both directions to meet the X..

In a Botany experiment the lengths (in mm) of 30 leaves measured are as indicated. Choose a table which shows the frequency distribution of the data. => Table - 1 or Table - 2..

Identify the error in constructing frequency distribution table. Class Frequency 53 - 57 8 58 - 62 4 68 - 71 3 72 - 77 1 => The number of classes are less than 5 or The classes are not continuous or The width of the classes are not equal or All of the above..

Identify the discrepancy in the frequency distribution. Class Frequency 15 - 19 2 19 - 23 3 23 - 27 1 27 - 31 6 31 - 35 4 => The class width should be more than 5 and it should be an odd number. or The class width should be more that 5, the classes must be mutually exclusiv..

On the annual day function of a school, 200 chocolates were brought to be distributed among the students of 6 th , 7 th , 8 th and 9 th grades. The frequency table shows the number of chocolates that were distributed among the students of different grades. Ho..

The students of Environmental studies collected the data of the life span of Zebras from the zoological authorities which are as follows. 20, 12, 19, 22, 28, 30, 17, 25, 10, 23, 16, 18, 21, 32, 15, 14, 8, 22, 11, 13, 18, 20, 21, 19, 19 Find the average life span of a Zebra by constructing a fr..

The blood urea nitrogen (in milligrams per deciliter - mg/dl) count of 20 randomly selected patients is shown in the frequency distribution table. Blood urea nitrogen Frequency 11 - 13 3 13 - 15 4 15 - 17 3 17 - 19 5 19 - 21 5 Find the variance and standard d..