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The distribution of marks scored by a large class in an exam can be represented as a normal distribution with mean u and standard deviation o. in a follow-up ex
The distribution of marks scored by a large class in an exam can be represented as a normal distribution with mean u and standard deviation o. In a follow-up exam in the same class, everyone scored 5 marks more than their respective score in the earlier exam. For this follow-up exam. the distribution of marks can be represented as a normal distribution with mean l and standard deviation O2. Which one of the following is correct? (A) = : o > 02 (B) u< l2: O> O2 (D) u
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Anup Padwal![best-answer]()
Option D Due to increased marks data shifted to right side of graph which results in increase in mean. both data are in nornal distribution and shifted whole therefore standard deviation will be same.