A class of 20 students has a mean score of 80. Another class of 30 students has a mean score of 70. What is the combined mean of all 50 students?
- Acheck_circle
74
- B
76
- C
75
- D
73
Explanation
Total = . Mean = .
One-Variable Data: Distributions and Measures of Center and Spread
SAT Math· difficulty 3/5
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