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H13-311_V3.5 · Question #157
H13-311_V3.5 Question #157: Real Exam Question with Answer & Explanation
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Question
Which of the following about the description of expectations and variances is incorrect?
Options
- AExpectation reflects the average level of random variable values
- BThe variance reflects the degree of deviation between the random variable and its mathematical
- CExpectation and variance are both numerical characteristics of random variables
- DThe greater the expectation the smaller the variance
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