1. Find the range and mean of following data:
णनम्न आँकड़ ं का परिसि औि माध्य ज्ञात कि :
21, 16, 30, 15, 16, 18, 10, 24, 26, 20
2. Find the mode and median of following observations:
णनम्नणिखित आँकड़ ं का बहुिक औि माध्यक ज्ञात कि :
24, 26, 24, 25, 26, 26, 28
3. Find the angle which is equal to its supplement.
िह क ि ज्ञात कि णिसका मान उसे संपूिक क ि के बिाबि ह ता है।
4. Solve :
हि कि :
5. Write the following equation in statement form: 3p + 4 = 29
णनम्नणिखित समीकिि क सामान्य कथन के रूप में णिि : 3p + 4 = 29
6. Find mean of first five multiples of 5.
5 के पहिे पाँच गुिि ं का माध्य ज्ञात कि ।
7. The length of a rectangle is twice its breadth. If its perimeter is 60 cm,
find the length and the breadth of the rectangle
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10th
Maths
Statistics
Mode of Grouped Data
Find the mode of the follow...
STATISTICS
Find the mode of the following data.
Class Interval Frequency
10-20 7
20-30 12
30-40 20
40-50 11
50-60 8
MEDIUM
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ANSWER
Class intervals Frequency
10-20 7
20-30 12
30-40 20
40-50 11
50-60 8
Here maximum frequency is 20 ,the class corresponding to this 30-40
So modal class is 30-40
Now lower limit of modal class (l)=30
Frequency (f1) of modal class =20
frequency (f0) of preceding the modal class =12
frequency (f2) of the class succeeding the modal class=11
Class size=10
Mod=l+[
2f1−f0−f2
f1−f0
]×h
Mod =30+[
2×20−12−11
20−12
]×10=30+
17
8
×10=30+4.705=34.705
Step-by-step explanation:
1. Find the range and mean of following data
21, 16, 30, 15, 16, 18, 10, 24, 26, 20