Descriptive Statisticsmedium
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A school has 200 tenth-grade students with a mean height of 172 cm and 100 ninth-grade students with a mean height of 166 cm. What is the mean height of all 300 students combined?
A school has 200 tenth-grade students with a mean height of 172 cm and 100 ninth-grade students with a mean height of 166 cm. What is the mean height of all 300 students combined?