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Chapter 13 of 14
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Statistics

CBSE · Class 11 · Mathematics

Flashcards for Statistics — CBSE Class 11 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

161 questions60 flashcards5 concepts

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Card 1Mean

Batsman A scored 30, 91, 0, 64, 42, 80, 30, 5, 117, 71 in 10 matches. Find the mean.

Answer

Step 1: Add the scores = 30 + 91 + 0 + 64 + 42 + 80 + 30 + 5 + 117 + 71 = 530. Step 2: Divide by the number of observations: 530 ÷ 10 = 53. Answer: Mean = 53.

Card 2औसत

बल्लेबाज ए ने 10 मैचों में 30, 91, 0, 64, 42, 80, 30, 5, 117, 71 रन बनाए। माध्य ज्ञात कीजिए।

Answer

चरण 1: स्कोरs = 30 + 91 + 0 + 64 + 42 + 80 + 30 + 5 + 117 + 71 = 530. जोड़ें चरण 2: प्रेक्षणों की संख्या से भाग दें: 530 ÷ 10 = 53. उत्तर: मीn = 53.

Card 3Median

Batsman B scored 53, 46, 48, 50, 53, 53, 58, 60, 57, 52 in 10 matches. Find the median.

Answer

Step 1: Arrange in order: 46, 48, 50, 52, 53, 53, 53, 57, 58, 60. Step 2: There are 10 observations, so median is the mean of the 5th and 6th observations. Step 3: 5th = 53 and 6th = 53. Step 4: Media

Card 4मध्यिका

बल्लेबाज बी ने 10 मैचों में 53, 46, 48, 50, 53, 53, 58, 60, 57, 52 रन बनाए। माध्यिका ज्ञात कीजिए।

Answer

चरण 1: क्रम में लगाएँ: 46, 48, 50, 52, 53, 53, 53, 57, 58, 60. चरण 2: यहाँ 10 अवलोकन हैं, इसलिए माध्यिका 5वें और 6वें अवलोकन का माध्य है। चरण 3: 5th = 53 and 6th = 53. चरण 4: माध्यn = (53 + 53) ÷ 2 =

Card 5Range

Find the range of Batsman A's scores: 30, 91, 0, 64, 42, 80, 30, 5, 117, 71.

Answer

Step 1: Identify the maximum value = 117. Step 2: Identify the minimum value = 0. Step 3: Use Range = Maximum value – Minimum value. Step 4: Range = 117 – 0 = 117. Answer: Range = 117.

Card 6सीमा

बल्लेबाज ए के अंकों की सीमा ज्ञात कीजिए: 30, 91, 0, 64, 42, 80, 30, 5, 117, 71।

Answer

चरण 1: अधिकतम मानe = 117. की पहचान करें चरण 2: न्यूनतम मानe = 0. की पहचान करें चरण 3: रंगe = Maximum value – Minimum value. का उपयोग करें चरण 4: रंगe = 117 – 0 = 117. उत्तर: रंगe = 117.

Card 7Concept of dispersion

Why can two data sets have the same mean and median but different spread? Use the two batsmen scores as an example.

Answer

Same mean and median show the centre of the data, but they do not show how far the values are spread out. Batsman A has scores from 0 to 117, so the spread is large. Batsman B has scores from 46 to 60

Card 8प्रकीर्णन की अवधारणा

दो डेटा सेटों का माध्य और माध्यिका समान क्यों हो सकता है लेकिन प्रसार अलग-अलग क्यों हो सकता है? दो बल्लेबाजों के स्कोर को एक उदाहरण के रूप में उपयोग करें।

Answer

माध्य और माध्यिका दोनों ही डेटा के केंद्र को दर्शाते हैं, लेकिन वे यह नहीं बताते कि मान कितने दूर तक फैले हुए हैं। बल्लेबाज ए के स्कोर 0 से 117 तक हैं, इसलिए फैलाव अधिक है। बल्लेबाज बी के स्कोर 46 से

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Frequently Asked Questions

What are the important topics in Statistics for CBSE Class 11 Mathematics?
Statistics covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Statistics — CBSE Class 11 Mathematics?
Understand the core concepts first, then work through the 161 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Statistics?
There are 60 flashcards for Statistics covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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