Calculate the median of the following data that contains the salary of 280 persons
Salary. No.of persons
5-10 49
10-15 133
15-20 63
20-25 15
25-30 6
30-35 7
35-40 4
40-45 2
45-50 1
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cf
5-10. 49
10-15. 162
15-20. 225
20-25. 240
25-30. 246
30-35. 253
35-40. 257
40-45. 259
4t-50. 260
here. L =10 , f=133, cf =49 , n=260 , h=5
=l+(n/2 - cf )×h/ 113
=10 + 130 - 49 ×5/ 113
=10 + 405/ 113
=10 + 3.58
= 13.58
5-10. 49
10-15. 162
15-20. 225
20-25. 240
25-30. 246
30-35. 253
35-40. 257
40-45. 259
4t-50. 260
here. L =10 , f=133, cf =49 , n=260 , h=5
=l+(n/2 - cf )×h/ 113
=10 + 130 - 49 ×5/ 113
=10 + 405/ 113
=10 + 3.58
= 13.58
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