Which one of the following groups has different class interval from others?
A
120−170
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B
243−249
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C
1415−1465
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D
3155−3205
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Solution
The correct option is B243−249 Class interval of option A =170−120=50 of B =249−243=5 of C =1465−1415=50 of D =3205−3155=50 So, option B has a different class interval from the others.