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                                    Calculate standard deviation by direct method:CI: 0-10 10-20 20-30 30-40 40-50f:43652 | 
                            
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Answer»  Answer: 1 2 3 4 5 6 7 8 9 10 Marks : 5 10 20 25 40 42 45 48 70 80 [Ans. σ = 23.07] 38. ... from the following distribution : C.I. : 0—10 10—20 20 —30 30—40 40—50 F : 8 13 16 8 5 [Ans. X ... Explanation: please mark as brainleast answer and follow me  | 
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