निम्नलिखित आँकड़ों का समान्तर माध्य ज्ञात कीजिए वर्ग अन्तराल : 60-69 50-59 40-49 30-39 20-29 10-19 0-9 आवृति 2 5 8 12 9 6 4
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samaantr madhy
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Explanation:
Given Find the arithmetic mean of the following data Class Interval : 60-69 50-59 40-49 30-39 20-29 10-19 0-9 Frequency 2 5 8 12 9 6 4
- Class Interval Mid Point (x1) Frequency (f1) f1x1
- 60 – 69 64.5 2 129
- 50 – 59 54.5 5 272.5
- 40 – 49 44.5 8 356
- 30 – 39 34.5 12 414
- 20 – 29 24.5 9 220.5
- 10 – 19 14.5 6 87
- 0 – 9 4.5 4 18
- ------- ----------
- 46 1497
- Now Mean = ∑ f1x1 /∑ f1
- = 1497 / 46
- = 32.543
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https://brainly.in/question/2399978
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