please only correct answer.. Q10
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Answer: Class interval 45- 60 having frequency 15 is the correct answer as mode means the maximum times a value comes.
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f1=15. f0=5. f2=10. h=15. l=45
Mode=l+[(f1-fo)/(2f1-f0-f2)]h.
=45+[(15-5)/(30-5-10)](15)
=45+[10/15]15
=45+10=55