1. The marks distribution of 30 students in a Mathematics exam are given below. Find mode of this data. Class Interval 10-25 25-40 40-55 55-70 70-85 85-100 Number of students 2 3 7 6 6 6
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Subject:
Math -
Author:
brieporter -
Created:
1 year ago
Answers 2
Answer:
Let the mean be
x
Using the direct method:
x
=
∑n
i
∑x
i
n
i
=
30
2×17.5+3×32.5+7×47.5+6×62.5+6×77.5+6×92.5
=
30
1860
=62
Mode is the data point that occurs the most frequently in the data set.
Hence, the mode is class-interval 40−55.
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Author:
angelawoods
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Answer:
hence the mode of class interval is 40 - 55
Step-by-step explanation:
Let the mean be x
Using the direct method: x=∑ni∑xini
=302×17.5+3×32.5+7×47.5+6×62.5+6×77.5+6×92.5
=301860=62
Mode is the data point that occurs the most frequently in the data set.
Hence, the mode is class-interval 40−55
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