6. Find the value of ‘p’ if the mean of the following distribution is 25:
classes 0-10 10-20 20-30 30-40 40-50
Frequency 5 18 15 P+6 6
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Classes. Frequency (f). Mid-value (x). fx. 0 - 10. 5. 5. 25. 10 - 20. 18. 15. 270. 20 - 30. 15. 25. 375. 30 - 40. P. 35. 35p. 40 - 50. 6. 45. 270. 44 + p.
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