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CBSE Class 9 Answered

how do we find class size when the data given is not spaced uniformly ?
Asked by bansari Butani | 15 Jan, 2014, 11:54: AM
answered-by-expert Expert Answer
We need to choose the most frequently occurring class size to act as the unit in which to express the other class intervals. But as classes are unequal, we define frequency density as d = 1
 
Thus, frequency density = d x (frequency/class width)
Answered by Rashmi Khot | 16 Jan, 2014, 09:48: AM

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CBSE 9 - Maths
Q-16 Make a frequency polygon for given frequency table (5) - Class Interval Frequency Section A Section B 3 0 - 5 2 5 - 10 3 5 10 - 15 4 2 15 - 20 1 3 20 - 25 5 4 25 - 30 3 2
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CBSE 9 - Maths
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CBSE 9 - Maths
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Asked by anaikapandeymarmoris | 20 Dec, 2022, 06:43: PM
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CBSE 9 - Maths
Following are the marks obtained by 20 students in an class 9 examination , 12,8,18,16,1,6,8,5,23,12,16,23,10,2,12,20,7,9,0,5 present the data in the form of a frequency distribution using (the class size such as 0-5 ,5-10 etc , how many students obtained marks below 15
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CBSE 9 - Maths
The most occurring frequency observation from data is called........ 
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CBSE 9 - Maths
The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x. 29, 32, 48, 50, x, x + 2, 72, 78, 84, 95
Asked by swatipuspapatel | 12 Jan, 2021, 07:21: PM
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CBSE 9 - Maths
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CBSE 9 - Maths
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CBSE 9 - Maths
I am unable to understand the symbols please help me to understand the symbols in the solution any give me answer in detail by writing in language not a symbol use.
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Asked by Anubhavjain599 | 15 Dec, 2019, 11:54: AM
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CBSE 9 - Maths
how to find mean , median , mode
Asked by anish.ravesh | 07 Jul, 2019, 12:14: PM
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