The mode of the following data is 67
Asked by admin @ in Math viewed by 354 People
Determine the missing frequency x from the following data when the mode is 67
40-50; 50-60; 60-70; 70-80; 80-90
5 x 15 12 7
Asked by admin @ in Math viewed by 354 People
Determine the missing frequency x from the following data when the mode is 67
40-50; 50-60; 60-70; 70-80; 80-90
5 x 15 12 7
Answered by admin @
class f
40-50 5
50-60 x
60-70 15
70-80 12
80-90 7
mode = L + (f1-f0/2f1-f0-f2)h
67 = 60+(15-x /30-x-12)10
7=(15-x/18-x)10
7/10=15-x/18-x
7(18-x)=10(15-x)
126-7x=150-10x
3x=24
x=8
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