Answers

2016-03-20T10:37:36+05:30
10.5 + 7/2 = 10.5 + 3.5 = 14 10.5 - 7/2 = 10.5 - 3.5 = 7 ∴ one class interval is 7-14 Class interval + class size 14+7=21 21+7=28 28+7=35 35+7=42 and so on...... ∴class intervals are 7-14 14-21 21-28 28-35 35-42 etc.....
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2016-03-20T11:14:19+05:30
class interval is 7-14 , 14-21 , 21-28 ............
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