033 Find mode of the following data :-
No. of cars o-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80.
Frequency
12,14,30,42,80,11,8,3.
Answers
Answered by
0
Answer:
Formula for finding mode is given by,
Mode = L+
(f
m
−f
m−1
)+(f
m
−f
m+1
)
f
m
−f
m−1
×w
Where, L= lower class boundary of modal class
(Model class = class with highest frequency)
f
m−1
= frequency of class before modal class
f
m
= frequency of modal class
f
m+1
= frequency of after modal class
w = group width
Here,
0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80
7 14 13 12 20 11 15 8
Hence, Mode = 40+
(20−12)+(20−11)
20−12
×10
=40+
8+9
8
×10
=40+
17
80
=40(1+
17
2
)
=
17
40×19
=
17
760
Mode =
17
760
Similar questions