Question

Find mode class 0_10 10 _ 20 20 -30 30-40 40
-50 freq
uency 8;16;36;34;6

Answer 1

Step-by-step explanation:

0-10. 8

10-20. 16

L 20-30. 36 modal class

30-40. 34

40-50. 6

mode=Z= L+(f1-fo/2f1-fo-f2) *h

L=lower boundary of the modal class=20

f1=frequency of the modal class

fo=frequency preceeding the modal class

f2= frequency succeeding the modal class

h= height of the class interval

Z= 20+(36-16/2*36-16-34)*10

=20+(26/72-16-34)*10

20+(26/72-50)*10

20+(26/22)*10

20+(260/22)

20+11.8181

31.818181

31.8182

31.818

31.82

31.8