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What was the average (arithmetic mean) score for all the fre
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29 Aug 2018, 16:35
29 Aug 2018, 16:35
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96% (01:02) correct
3% (01:13) wrong based on 33 sessions
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Score results on a college mathematics proficiency exam
What was the average (arithmetic mean) score for all the freshmen and sophomores taking the exam? Give your answer rounded to the nearest 0.1 points.
| Freshmen | Sophomores | |
| Number of students taking the exam | 120 | 80 |
| Average (arithmetic mean) score on the exam | 78 points | 84 points |
What was the average (arithmetic mean) score for all the freshmen and sophomores taking the exam? Give your answer rounded to the nearest 0.1 points.
Show: :: OA
80.4
Re: What was the average (arithmetic mean) score for all the fre
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30 Aug 2018, 01:16
30 Aug 2018, 01:16
avg = \(\frac{120*78 + 80*84}{200}\)= \(\frac{16080}{200}\) = 80.4
Re: What was the average (arithmetic mean) score for all the fre
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31 Aug 2018, 20:46
31 Aug 2018, 20:46
Good question for practising the weighted average concept
