alleryएका शाखेंत 30 लिपिक सरासरी 60 गूण आनी 20 अधिकारी सरासरी 70 गूण मेळटात. सगळ्या 50 कर्मचाऱ्यांची सरासरी अशी आसा:
A62
B65
C66
D64
Answer & Solution
Correct answer: D. 64
1. 60 आनी 70 अशी सादी सरासरी चुकीची थारतली कारण दोनूय गट आकारान वेगळे आसात. 2. ताचे बदला एकूण घेवन काम करप: लिपिक वट्ट 30 x 60 = 1800. 3. अधिकारी वट्ट 20 x 70 = 1400. 4. एकठांय म्हणल्यार 50 लोकांचेर 3200 गूण. 5. म्हणल्यार एकत्रीत सरासरी 3200 / 50 = 64. 65 ची जाप दिवप हो सारको अभारित-सरासरी सापळो. _स्त्रोत: अभ्यासक्रम गणित, अध्याय 13 'सांख्यिकी', S13.2 गट केल्ल्या डेटाचें सरासरी_
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