Question

the class mark of the class 280-320 is taken the assumed mean. what is the value of di for the class 200-240?​

Answer 1

Step-by-step explanation:

class class mark

200 - 240 220 assumed mean

280 - 320 300 di = xi - A

di = 300 - 220

di = 70

Answer 2

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Class mark of 280-320 =$</em><em>\</em><em>large</em><em> \frac{280 + 320}{2} = \frac{600}{2} = 300$

Class mark of 200-240 =$</em><em>\</em><em>large</em><em> \frac{200 + 240}{2} = \frac{440}{2} = 220$

So, Assumed mean(A) = 220

Now,

di = xi - A

di = 300 - 220

di = 80

$<font color="green"> Hence, Required value of di is 80.</font color="purple">$

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