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For a science fair project, Cora tracked the temperature each day. Temperature reading (°C) Number of temperature readings 6 2 22 3 25 1 35 1 2 42 1 X is the temperature that a randomly chosen temperature reading was. What is the expected value of X? Write your answer as a decimal.

User Moosli
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1 Answer

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We get that the expected temperature is


\begin{gathered} E(T)=6\cdot(2)/(10)+22\cdot(3)/(10)+25\cdot(1)/(10)+35\cdot(1)/(10)+41\cdot(2)/(10)+42\cdot(1)/(10) \\ E(T)=26.2 \end{gathered}

User Paul Dixon
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