Question

the class marks of a frequency distribution are given as follows 15 25 20 the class corresponding to the class mark 15 is is​

Answer 1

Answer:

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The class marks of a frequency distribution are given as follows: 15, 20, 25 The class corresponding to the class mark. The class marks of a frequency distribution are given as: 15, 20, 25, ...

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

Class marks are: 15,20,25,...

Lower limit of class 20 is mean of 15 and 20=

= 15+20/ 2

= 17.5

Upper limit of class 20 is the mean of 20 and 25=

=20+25/2

=22.5  

 

20 is the class mark for the class interval 17.5−22.5