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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 7 - Correlation - Shaalaa.com](/images/statistics-for-economics-english_6:098eda7804764399818daa37556a8f8c.jpg "NCERT solutions for Statistics for Economics [English] chapter 7 - Correlation")
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Solutions for Chapter 7: Correlation
Below listed, you can find solutions for Chapter 7 of CBSE NCERT for Statistics for Economics [English].
NCERT solutions for Statistics for Economics [English] 7 Correlation Exercise [Pages 105 - 106]
The unit of the correlation coefficient between height in feet and weight in kgs is ______
kg/feet
percentage
non-existent
The range of simple correlation coefficient is ______
0 to infinity
minus one to plus one
minus infinity to infinity
If rxy is positive the relation between X and Y is of the type ______
When Y increases X increases
When Y decreases X increases
When Y increases X does not change
If rxy = 0 the variable X and Y are ______
linearly related
not linearly related
independent
Of the following three measures which can measure any type of relationship.
Karl Pearson’s coefficient of correlation
Spearman’s rank correlation
Scatter diagram
If precisely measured data are available the simple correlation coefficient is ______
more accurate than the rank correlation coefficient
less accurate than the rank correlation coefficient
as accurate as the rank correlation coefficient
Why is r preferred to covariance as a measure of association?
Can r lie outside the –1 and 1 range depending on the type of data?
Does correlation imply causation?
When is rank correlation more precise than simple correlation coefficient?
Does zero correlation mean independence?
Can a simple correlation coefficient measure any type of relationship?
Collect the price of five vegetables from your local market every day for a week. Calculate their correlation coefficients. Interpret the result.
Measure the height of your classmates. Ask them the height of their benchmate. Calculate the correlation coefficient of these two variables. Interpret the result.
List some variables where accurate measurement is difficult.
Interpret the values of r as 1, –1, and 0.
Why does the rank correlation coefficient differ from the Pearsonian correlation coefficient?
Calculate the correlation coefficient between the heights of fathers in inches (X) and their sons (Y)
|
X |
65 |
66 |
57 |
67 |
68 |
69 |
70 |
72 |
|
Y |
67 |
56 |
65 |
68 |
72 |
72 |
69 |
71 |
Calculate the correlation coefficient between X and Y and comment on their relationship:
|
X |
-3 |
-2 |
-1 |
1 |
2 |
3 |
|
Y |
9 |
4 |
1 |
1 |
4 |
9 |
Calculate the correlation coefficient between X and Y and comment on their relationship.
|
X |
1 |
3 |
4 |
5 |
7 |
8 |
|
Y |
2 |
6 |
8 |
10 |
14 |
16 |
Solutions for 7: Correlation
NCERT solutions for Statistics for Economics [English] chapter 7 - Correlation
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 7 (Correlation) 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 7 Correlation are Lorenz Curve, Measures of Central Tendency - Mean, Measures of Central Tendency - Median, Measures of Central Tendency - Mode, Measures of Central Tendency - Central Value Or Representative Value, Measures of Central Tendency - Series, Measures of Central Tendency - Partition Value, Measures of Central Tendency - Quartile, Measures of Central Tendency - Deciles, Measures of Central Tendency - Percentile, Measures of Dispersion - Absolute Dispersion, Measures of Dispersion - Relative Dispersion, Lorenz Curve, Correlation Meaning, Properties of Correlation,, Types of Correlation, Scatter Diagram of Correlation, Measures of Correlation - Karl Pearson'S Method (Two Variables Ungrouped Data), Measures of Correlation - Spearman's Rank Correlation, Meaning of Index Numbers, Uses of Index Numbers, Types of Index Number - Wholesale Price Index, Types of Index Number - Consumer Price Index, Types of Index Number - Index of Industrial Production, Construction of Price Index, Cost of Living Index Number, Inflation and Index Numbers, Method to Measure - Simple Aggregate Method, Method to Measure - Simple Average Price Relative Method, Method to Measure - Laspeyer Method, Method to Measure - Paasche's Index Numer, Method to Measure - Fisher's Method, Correlation Meaning, Types of Relationship, Techniques for Measuring Correlation, Correlation - Conclusion.
Using NCERT Statistics for Economics [English] solutions Correlation 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 7, Correlation 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.
