hello
sta. ch9 pg233 q38
plz. send a pic of solution mentioning steps
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15-20. 7
20-25. 16
25-30. 12
30-35. 9
35-40. 2
at right hand side are class size and at left are the respective frequencies which have been found by (the number of current class - the number of previous class)
max frequency of 20- 25
ans is 20 + (16-7)/(2×16 -16-7)×5 = 20+45/13
(formula in ncert)
20-25. 16
25-30. 12
30-35. 9
35-40. 2
at right hand side are class size and at left are the respective frequencies which have been found by (the number of current class - the number of previous class)
max frequency of 20- 25
ans is 20 + (16-7)/(2×16 -16-7)×5 = 20+45/13
(formula in ncert)
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