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Chapters
2: Collection of Data
▶ 3: Organisation of Data
4: Presentation of Data
5: Measures of Central Tendency
6: Measures of Dispersion
7: Correlation
8: Index Numbers
Chapter 9: Use of Statistical Tools
![NCERT solutions for Statistics for Economics [English] chapter 3 - Organisation of Data - Shaalaa.com](/images/statistics-for-economics-english_6:098eda7804764399818daa37556a8f8c.jpg "NCERT solutions for Statistics for Economics [English] chapter 3 - Organisation of Data")
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Solutions for Chapter 3: Organisation of Data
Below listed, you can find solutions for Chapter 3 of CBSE NCERT for Statistics for Economics [English].
NCERT solutions for Statistics for Economics [English] 3 Organisation of Data Exercise [Pages 37 - 38]
Which of the following alternatives is true?
The class midpoint is equal to ______.
The average of the upper-class limit and the lower class limit.
The product of the upper-class limit and the lower class limit.
The ratio of the upper-class limit and the lower class limit.
None of the above.
The frequency distribution of two variables is known as ______
Univariate Distribution
Bivariate Distribution
Multivariate Distribution
None of the above.
Statistical calculations in classified data are based on ______
the actual values of observations
the upper-class limits
the lower class limits
the class midpoints
Range is the ______
difference between the largest and the smallest observations
difference between the smallest and the largest observations
average of the largest and the smallest observations
ratio of the largest to the smallest observation
Can there be any advantage in classifying things? Explain with an example from your daily life.
What is a variable?
Distinguish between a discrete and a continuous variable.
Explain the ‘exclusive’ and ‘inclusive’ methods used in the classification of data.
Use the data in the Table below that relate to monthly household expenditure (in Rs) on the food of 50 households and
| 1904 | 1559 | 3473 | 1735 | 2760 |
| 2041 | 1612 | 1753 | 1855 | 4439 |
| 5090 | 1085 | 1823 | 2346 | 1523 |
| 1211 | 1360 | 1110 | 2152 | 1183 |
| 1218 | 1315 | 1105 | 2628 | 2712 |
| 4248 | 1812 | 1264 | 1183 | 1171 |
| 1007 | 1180 | 1953 | 1137 | 2048 |
| 2025 | 1583 | 1324 | 2621 | 3676 |
| 1397 | 1832 | 1962 | 2177 | 2575 |
| 1293 | 1365 | 1146 | 3222 | 1396 |
Use the data in the Table below that relate to monthly household expenditure (in Rs) on the food of 50 households and
| 1904 | 1559 | 3473 | 1735 | 2760 |
| 2041 | 1612 | 1753 | 1855 | 4439 |
| 5090 | 1085 | 1823 | 2346 | 1523 |
| 1211 | 1360 | 1110 | 2152 | 1183 |
| 1218 | 1315 | 1105 | 2628 | 2712 |
| 4248 | 1812 | 1264 | 1183 | 1171 |
| 1007 | 1180 | 1953 | 1137 | 2048 |
| 2025 | 1583 | 1324 | 2621 | 3676 |
| 1397 | 1832 | 1962 | 2177 | 2575 |
| 1293 | 1365 | 1146 | 3222 | 1396 |
Monthly Household Expenditure (in Rupees) on Food of 50 Households
Divide the range into an appropriate number of class intervals and obtain the frequency distribution of expenditure.
Use the data in the Table below that relate to monthly household expenditure (in Rs) on the food of 50 households and
| 1904 | 1559 | 3473 | 1735 | 2760 |
| 2041 | 1612 | 1753 | 1855 | 4439 |
| 5090 | 1085 | 1823 | 2346 | 1523 |
| 1211 | 1360 | 1110 | 2152 | 1183 |
| 1218 | 1315 | 1105 | 2628 | 2712 |
| 4248 | 1812 | 1264 | 1183 | 1171 |
| 1007 | 1180 | 1953 | 1137 | 2048 |
| 2025 | 1583 | 1324 | 2621 | 3676 |
| 1397 | 1832 | 1962 | 2177 | 2575 |
| 1293 | 1365 | 1146 | 3222 | 1396 |
Monthly Household Expenditure (in Rupees) on Food of 50 Households
Find the number of households whose monthly expenditure on food is
(b) more than Rs 3000
(c) between Rs 1500 and Rs 2500
In a city, 45 families were surveyed for the number of Cell phones they used. Prepare a frequency array based on their replies as recorded below.
| 1 | 3 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 2 | 2 | 3 | 3 | 3 | 3 |
| 3 | 3 | 2 | 3 | 2 | 2 | 6 | 1 | 6 | 2 | 1 | 5 | 1 | 5 | 3 |
| 2 | 4 | 2 | 7 | 4 | 2 | 4 | 3 | 4 | 2 | 0 | 3 | 1 | 4 | 3 |
What is ‘loss of information’ in classified data?
Do you agree that classified data is better than raw data? Why?
Distinguish between univariate and bivariate frequency distribution.
Prepare a frequency distribution by inclusive method taking class interval of 7 from the following data:
|
28 |
17 |
15 |
22 |
29 |
21 |
23 |
27 |
18 |
12 |
7 |
2 |
9 |
4 |
|
1 |
8 |
3 |
10 |
5 |
20 |
16 |
12 |
8 |
4 |
33 |
27 |
21 |
15 |
|
3 |
36 |
27 |
18 |
9 |
2 |
4 |
6 |
32 |
31 |
29 |
18 |
14 |
13 |
|
15 |
11 |
9 |
7 |
1 |
5 |
37 |
32 |
28 |
26 |
24 |
20 |
19 |
25 |
|
19 |
20 |
6 |
9 |
"The quick brown fox jumps over the lazy dog"
Examine the above sentence carefully and note the numbers of letters in each word. Treating the number of letters as a variable, prepare a frequency array for this data.
Solutions for 3: Organisation of Data
NCERT solutions for Statistics for Economics [English] chapter 3 - Organisation of Data
Shaalaa.com has the CBSE Mathematics Statistics for Economics [English] CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Statistics for Economics [English] CBSE 3 (Organisation of Data) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Statistics for Economics [English] chapter 3 Organisation of Data are Collection of Data, Sources of Data - Primary, Sources of Data - Secondary, Concepts of Sampling, How Basic Data is Collected, Methods of Collecting Data, Some Important Sources of Secondary Data, Organisation of Data, Meaning of Variables, Types of Variables, Organisation of Data - Raw Data, Organisation of Data - Frequency Series, Organisation of Data - Frequency Distribution, Tabular Presentation and Diagrammatic Presentation of Data - Geometric Form, Tabular Presentation and Diagrammatic Presentation of Data - Frequency Diagrams, Abular Presentation and Diagrammatic Presentation of Data - Arithmetic Line Graphs, Classification of Data, Variables - Continuous and Discrete, What is a Frequency Distribution?, Bivariate Frequency Distribution, Organisation of Data - Conclusion, Introduction to Organisation of Data, Organisation of Data - Raw Data.
Using NCERT Statistics for Economics [English] solutions Organisation of Data exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE Statistics for Economics [English] students prefer NCERT Textbook Solutions to score more in exams.
Get the free view of Chapter 3, Organisation of Data Statistics for Economics [English] additional questions for Mathematics Statistics for Economics [English] CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.
