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sum f(i) x(i) =900. Total observation is...

`sum f_(i) x_(i) =900`. Total observation is a 45. What is `barX` ?

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UNIQUE PUBLICATION-PRACTICE FOR SUBQUESTIONS -2 marks Questions
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  17. If class marks is 20 and class width is 6. Find the class.

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  18. sum f(i) x(i) =900. Total observation is a 45. What is barX ?

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  19. The mean of the five numbers is 50 out of which the mean of the 4 numb...

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  20. The weight of 10 students in kg is given below then find mode : 40,...

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