What is the expected value of the roll of a fair octahedral die? (An octahedral die has 8 faces, numbered from 1 to 8.) Express your answer as a decimal.
Question:
What is the expected value of the roll of a fair octahedral die? (An octahedral die has 8 faces, numbered from 1 to 8.) Express your answer as a decimal.
Answer:
Let's think step by step.

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4.5
What is the expected value of the roll of a fair octahedral die? (An octahedral die has 8 faces, numbered from 1 to 8.) Express your answer as a decimal.
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