calculate the mean of the following distribution using
assumed mean method
class interval : 0-10 ,10-20,20-30,30-40,40-50.
frequency: 5, 7, 15, 28 , 8
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Answer:
CI f. x. a=25. fd
d=x-a
0-10. 5. 5. -20. -100. -170
10-20. 7. 15. -10. -70
20-30. 15. 25. 0. 0
30-40. 28. 35. 10. 280.
40-50. 8. 45. 20. 160
440-170=270
Step-by-step explanation:
use shortcut method 29.28 is the answer
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