Question

In case of grouped frequency distribution ,if 20-30 is a class interval which is bounded between 20 and 30,then1)20is called_ 2)30 is called _ 3)width or size of the class interval is _​

Answer 1

Answer:

20 is called as lower boundary

30 is called as upper boundary

size or width of class is 30-20=10

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Answer 2

Step-by-step explanation:

20- lower boundary

30-higer boundary

10 is width