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Analysis of Data

NIOS · Class 10 · Economics

Practice quiz for Analysis of Data — NIOS Class 10 Economics. MCQs and questions with answers to test your preparation.

45 questions28 flashcards5 concepts

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Quick Quiz: Analysis of Data

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1

Using the direct method for the discrete series of number of children per family, what is the arithmetic mean when the total number of children is 420 and the total frequency is 140 families?

2

For the continuous series with class intervals 0-10, 10-20, 20-30, 30-40, 40-50, 50-60 and 60-70, and frequencies 23, 27, 40, 120, 40, 27 and 23, what is the arithmetic mean by the direct method?

3

In the continuous series with A = 25, N = 300, and Σfdx = 3000, what is the arithmetic mean by the shortcut method without step deviation?

4

In the continuous series with A = 25, N = 300, Σfdx' = 300, and c = 10, what is the arithmetic mean by the shortcut method with step deviation?

45 Questions·
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Sample Questions

1multiple choice
3 marks

A group of 10 students scored 2, 7, 10, 8, 6, 3, 5, 4, 5 and 0 marks out of 10. What is the arithmetic mean?

Show answer

5

Add the marks: 2 + 7 + 10 + 8 + 6 + 3 + 5 + 4 + 5 + 0 = 50. Then divide by the number of students, 10. So the arithmetic mean = 50/10 = 5. The unit is marks.

2multiple choice
3 marks

For the discrete series of number of children per family, the values are 0, 1, 2, 3, 4, 5 and 6 with frequencies 13, 17, 20, 40, 20, 17 and 13. What is the arithmetic mean by the direct method?

Show answer

3

Compute Σfx = 0 + 17 + 40 + 120 + 80 + 85 + 78 = 420 and N = 140. Then mean = 420/140 = 3. The unit is children per family.

3multiple choice
3 marks

For the continuous series 0-10, 10-20, 20-30, 30-40, 40-50, 50-60 and 60-70 with frequencies 23, 27, 40, 120, 40, 27 and 23, what is the arithmetic mean if the class mid values are used and A = 25?

Show answer

35

The class mid values are 5, 15, 25, 35, 45, 55 and 65. Using the shortcut method without step deviation, Σfdx = 3000 and N = 300 when A = 25. So x̄ = 25 + 3000/300 = 35. The unit is marks.

4multiple choice
3 marks

If the arithmetic mean of 27 children among 10 families is calculated, what is the mean number of children per family?

Show answer

2.7

Arithmetic mean = total number of children / number of families = 27/10 = 2.7. The unit is children per family.

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Frequently Asked Questions

What are the important topics in Analysis of Data for NIOS Class 10 Economics?
Analysis of Data covers several key topics that are frequently asked in NIOS Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Analysis of Data — NIOS Class 10 Economics?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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