Find mode 15,12,20,18,16,25,30,40,35,50
Answers
Answer:
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Class 10
>>Maths
>>Statistics
>>Mode of Grouped Data
>>Calculate the mode of the following data
Question
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Calculate the mode of the following data.
Size of item 10−15 15−20 20−25 25−30 30−35 35−40 40−45 45−50
No. of items 4 8 18 30 20 10 5 2
Medium
Solution
verified
Size of the item
10−15 4
15−20 8
20−25 18
25−30 30
30−35 20
35−40 10
40−45 5
45−50 2
Modal class is 25−30 since it has the maximum frequency.
Lower limit of the modal class l=25
Frequency of the modal class f=30
Frequency of the preceding modal class f
1
=18
Frequency of the class reducing the modal class f
2
=20
Class width c=5
Mode =l+(
2f−f
1
−f
2
f−f
1
)×c
=25+(
60−18−20
30−18
)×5=25+
22
12×5
=25+
22
60
=25+2.73=27.73
Mode =27.73
Answer:
no mode
Explanation:
arrange them in ascending order
12 15 16 18 20 25 30 35 40 50
frequently occured number is none all are different
so no mode is the answer