Math, asked by mankushmanhasmk4444, 22 hours ago

Calculate mean, median and mode from the below series.
X. F
0-10. 4
10-20. 2
20-30. 3
30-40. 5
40-50. 7
50-60. 4
60-70. 5
70-80. 5
80-90. 5
90-100. 7​

Answers

Answered by MathTeacher029
1

mean=35.60, median=35.667, mode=35.4545

Answered by kumawatpriyanka420
1

Answer:

x. fi. xi. fixi(fi×xi) CF

0-10. 4. 5. 20. 4

10-20. 2. 15. 30. 6

20-30. 3. 25. 125. 9

30-40. 5. 35. 175 14

40-50. 7. 45. 315. 21

50-60. 4. 55. 220. 25

60-70. 5. 65. 325. 30

70-80. 5. 75. 375. 35

80-90. 5 85. 425. 40

90-100. 7. 95. 665. 47

47. 2675

mean:-

x(bar)= £fixi

----------

£fi

=. 2675

--------

47

= 56.91

median:-

l=50

n=10

CF=21

f=4

h=10

n/2=47/2=23.5

median=l+(n/2-cf)×h

---------

f

=50+(23.5-21)×10

-----------

4.

=50+(2.5)×10

-------

4

=50+25/4

=50+6.25

=56.25

mode:-

l=40

h=10

f1=7

f0=5

F2=4

mode= l+( f1-f0 ) × h

-------------

(2f1-f0-f2)

=40+(7-5). ×10

---------------

(2(7)-5-4)

=40+(2)×10

-----

5

=40+20/5

=40+4

=44.

I hope you will understand.

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