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Class 12 Probability · Assertion Reason1 Marksexpectation

Class 12 Maths · Probability · Assertion Reason #31

Assertion (A): If X takes 0,1,2 with probabilities 1/4,1/2,1/4, its mean is 1. Reason (R): The mean of a discrete distribution is Σxᵢpᵢ.

✅ Step-by-Step Solution

Final Answer: Option (A): Both A and R are true, and R correctly explains A.
  1. The weighted sum is 0·1/4+1·1/2+2·1/4=1, as given by R.

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