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Statistics and Probability
Quick questions on Weighted averages and expected value - ACT Mathematics
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
One class of 12 averages 85 and another of 8 averages 90. What is the combined average? [1 point]
What is q2?Show answer
A spinner pays 0 with probability 0.5. What is the expected payout? [1 point]
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