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# Interpolation- Statistics - Maths Edexcel Watch

1. Hello
When would you know to round the class's to their upper bounds i.e 33-35 = 32.5-35.5?
Because I noticed in some questions they do not round (in the book) ?
2. (Original post by Rukia12)
Hello
When would you know to round the class's to their upper bounds i.e 33-35 = 32.5-35.5?
Because I noticed in some questions they do not round (in the book) ?
I think this is how it works
31-32
33-34
35-36
Boundaries are 30.5-32.5 etc

IF its like this
31-32
32-33
33-34
Boundaries are 31-32
I think this is how it works
31-32
33-34
35-36
Boundaries are 30.5-32.5 etc

IF its like this
31-32
32-33
33-34
Boundaries are 31-32
Oh I see! Thank you very much !!!
4. (Original post by Rukia12)
Oh I see! Thank you very much !!!
No problem

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