Math, asked by shiva5521, 5 hours ago

Find out arthmetic mean from the following dataMarks 0-10 10-20 20-30 30-40 40-50Number of students - 10 12 20 18 10

Answers

Answered by bmanaswini2019

1

Step-by-step explanation:

find the midvalue of intervals

interval. midvalue(xi) marks(fi). fixi

0-10. 5. 10. 50

10-20. 15. 12. 180

20-30. 25. 20. 500

30-40. 35. 18. 630

40-50. 45. 10. 450

summation fi = 10+12+20+18+10 = 70

summation fixi = 50+180+500+630+450 =1810

mean = fixi/fi = 1810/70 =25.85

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