Question

The following are the marks obtained by 20 students in a class-test:
40,22,36,27,30,12,15,20,25,31,34,36,39,41,43,48,46,36,37,40
Arrange the above data in frequency distribution with equal classes

Answer 1

Hint: The given data needs to be arranged in frequency distribution then simply the classes should be exceeded till all entries with the same range as earlier provided and the frequency means the number of students or employees or any data for which the question is meant for.

Complete step by step solution:
For arranging the given data in table first we have to find the equal classes with the same range as given in question, then put in the formed table, so that to compare the marks given. In the table we have to draw three rows, one to mark another number of students and for the range given in the question.
From the given data the table formed looks like:

Serial Number	Marks Obtained	Number of Students
\[1\]	\[0 - 10\]	\[0\]
\[2\]	\[10 - 20\]	\[2\]
\[3\]	\[20 - 30\]	\[4\]
\[4\]	\[30 - 40\]	\[8\]
\[5\]	\[40 - 50\]	\[6\]
\[6\]	\[50 - 60\]	\[0\]
Total		\[20\]

Above the table formed is our required frequency distribution table.

Note: In dealing with statics you have to be very assuring for the data given, statistics gives the ability to analyze and optimize the given data for future prediction, or give you a detail analysis of the data for future possibilities you entered for any firm or company you are handling. With statistics you can also draw a grasp which gave you a particular pictorial representation of increment and decrement.