calculate the mode for the following distribution marks / no of students 0-10/6, 10-20/10, 20-30/12, 30-40/32, 40-50/20
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1
Answer:
Modal class
=
30−
40
So we have,
l=
30,f
0
=
12,f
1
=
32,f
2
=
20
and
h=
10
⇒
Mode=
l+
2f
1
−f
0
f
2
f
1
−f
0
×
h
=
30+
2×32−12−20
32−12
×
10
=
30+
6.25
=
36.25
∴ Mode
=
36.25
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