Question

Class mark of the class interal 10-15 is

Answer 1

Answer:

25/2 is the answer

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Answer 2

Answer:

class interval = upper-class limit - lower class limit.

upper - class limit = 15

lower - class limit = 10

class interval = ( 15 - 10 )

class interval = 5

hence , the class interval is 5

Step-by-step explanation:

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