Question

*वर्ग अंतराल 30.5-35.5 की उपरि वर्ग सीमा क्या है?*

1️⃣ 35
2️⃣ 35.5
3️⃣ 40
4️⃣ 4.5​

Answer 1

प्रश्न :- वर्ग अंतराल 30.5-35.5 की उपरि वर्ग सीमा क्या है ?

1) 35

2) 35.5

3) 40

4) 4.5

उतर :-

वर्ग अंतराल 30.5-35.5 की उपरि वर्ग सीमा(upper class limit) 35.5 है l

उदाहरण :- 20-29, 30-39, 40-49, ___________, 90-99.

→ इन समूहों को 'वर्ग' (classes) या 'वर्ग अंतराल '(class intervals) कहा जाता है इनके माप (size) है ।

→ वर्ग-माप (class-size) या वर्ग चौड़ाई (class width) कहा जाता है, जो कि यहाँ 10 है l

→ प्रत्येक वर्ग कि निम्नतम संख्या को निम्न वर्ग सीमा (lower class limit ) और अधिकतम संख्या को उपरि वर्ग सीमा (upper class limit) कहा जाता है ।

• जैसे, वर्ग 20-29 में 20 निम्न वर्ग सीमा है और 29 उपरि वर्ग सीमा है ।

इसलिए हम कह सकते है कि, वर्ग अंतराल 30.5-35.5 की उपरि वर्ग सीमा(upper class limit) 35.5 है l

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Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

The upper class limit for the class interval 30.5 - 35.5

1. 35

2. 35.5

3. 40

4. 4.5

CONCEPT TO BE IMPLEMENTED

CLASS INTERVAL

When the number of sample values are large in number and are in wide range, then the whole data is divided in a number of several groups according to the size of the sample. Each of these groups, made as above, is known as class interval

CLASS BOUNDARY

When class intervals are such a type that the upper class limit of any class is not equal to lower class limit of successive class then to get any continuous graphical representation of the data it is sometimes required to rearrange the class limits in such a way that the upper class limit of any class coincides with the lower class limit of next class. Then these class limits are called class boundaries. The lower and upper ends of any class are called lower and upper class boundaries respectively.

CLASS LENGTH

Length of the class interval of an class is defined to be the difference between the lower and upper class boundaries ( not class limits) of that particular class interval.

Class length = Upper Class boundary - Lower class boundary

CLASS FREQUENCY

The number of observed values falling within a class is called the frequency of that class

CLASS MARK

For any grouped frequency table with class intervals, the middle value of the class limits or the class boundaries of any class is called class mark of the class

EVALUATION

Here the given class interval is 30.5 - 35.5

From above we can conclude that the upper class limit for the class interval 30.5 - 35.5 is 35.5

FINAL ANSWER

The correct option is 2. 35.5

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