{"id":208111,"date":"2021-03-04T12:18:08","date_gmt":"2021-03-04T12:18:08","guid":{"rendered":"https:\/\/www.indcareer.com\/schools\/?p=208111"},"modified":"2023-09-21T06:34:46","modified_gmt":"2023-09-21T06:34:46","slug":"ncert-solutions-for-11th-class-economics-chapter-7-correlation","status":"publish","type":"post","link":"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-7-correlation\/","title":{"rendered":"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation"},"content":{"rendered":"\n<p>Class 11: Economics Chapter 7 solutions. Complete Class 11 Economics Chapter 7 Notes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ncert-solutions-for-11th-class-economics-chapter-7-correlation\"><strong>NCERT Solutions for 11th Class Economics: Chapter 7-Correlation<\/strong><\/h2>\n\n\n\n<p>NCERT 11th Economics Chapter 7, class 11 Economics chapter 7 solutions<\/p>\n\n\n\n<p><strong>Question 1.<br>The unit of correlation coefficient between height in feet and weight in kgs is<br>(a) kg\/feet<br>(b) percentage<br>(c) non-existent<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<p><br>(c) Correlation coefficient (r) has no unit. It is a pure number. It meansss units of measurement are not part of r.<\/p>\n\n\n\n<p>Question 2.<br>The range of simple correlation coefficient is<br>(a) 0 to infinity<br>(b) minus one to plus one<br>(c) minus infinity to infinity<br>Answer:<br>(b) The value of the correlation coefficient lies between minus one and plus one, -1 \u2264 r \u2264 1. If the value of r is outside this range it indicates error in calculation.<\/p>\n\n\n\n<p><strong>Question 3.<br>If r<sub>XY<\/sub>&nbsp;is positive the relation between X and Y is of the type<br>(a) when Y increases X increases<br>(b) when Y decreases X increases<br>(c) when Y increases X does not change<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<p><br>(a) If r is positive the two variables move in the same direction. e.g., when the price of coffee rises, the demand for tea also rises as coffee is a substitute of tea. Therefore, the r between price of coffee and demand for tea will be positive.<\/p>\n\n\n\n<p><strong>Question 4.<br>If r<sub>XY<\/sub>&nbsp;= 0, the variable X and Y are<br>(a) linearly related<br>(b) not linearly related<br>(c) independent<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<p><br>(b) If r<sub>XY<\/sub>&nbsp;= 0, it means the two variables are uncorrelated and there is no linear relation between them. However, other types of relation may be there and they may not be independent.<\/p>\n\n\n\n<p>NCERT 11th Economics Chapter 7, class 11 Economics chapter 7 solutions<\/p>\n\n\n\n<p><strong>Question 5.<br>Of the following three measures which can measure any type of relationship?<br>(a) Karl Pearson\u2019s coefficient of correlation<br>(b) Spearman\u2019s rank correlation<br>(c) Scatter diagram<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<p><br>(c) The scatter diagram gives a visual presentation of the relationship and is not confined to linear relations. Karl Pearson\u2019s coefficient of correlation and Spearman\u2019s rank correlation are strictly the measures of linear relationship.<\/p>\n\n\n\n<p>NCERT 11th Economics Chapter 7, class 11 Economics chapter 7 solutions<\/p>\n\n\n\n<p><strong>Question 6.<br>If precisely measured data are available the simple correlation coefficient is<br>(a) more accurate than rank correlation coefficient<br>(b) less accurate than rank correlation coefficient<br>(c) as accurate as the rank correlation coefficient<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<p><br>(a) Rank correlation should be used only when the variables cannot be measured precisely, generally it is not as accurate as the simple correlation coefficient as all the information concerning the data is not utilised in this.<\/p>\n\n\n\n<p>NCERT 11th Economics Chapter 7<\/p>\n\n\n\n<p><strong>Question 7.<\/strong><\/p>\n\n\n\n<p><strong>Why is r preferred to covariance as a measure of association?<\/strong><\/p>\n\n\n\n<p><strong>Answer:<\/strong><\/p>\n\n\n\n<p>Both, correlation coefficient and covariance measure the degree of linear relationship between two variables, but correlation coefficient is generally preferred to covariance due to the following reasons<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The correlation coefficient (r) has no unit.<\/li>\n\n\n\n<li>The correlation coefficient is independent of origin as well as scale.<\/li>\n<\/ul>\n\n\n\n<p><strong>Question 8.<br>Can r lie outside the -1 and 1 range depending on the type of data?<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<p><br>No the value of the correlation coefficient lies between minus one and plus one, -1 \u2264 r \u2264 1. If the value of r is outside this range in any type of data, it indicates error in calculation.<\/p>\n\n\n\n<p>NCERT 11th Economics Chapter 7, class 11 Economics chapter 7 solutions<\/p>\n\n\n\n<p><strong>Question 9.<br>Does correlation imply causation?<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<p><br>No, correlation measures do not imply causation. Correlation measures co-variation and not causation.<br>Correlation does not imply cause and effect relation. The knowledge of correlation only gives us an idea of the direction and intensity of change in a variable when the correlated variable changes. The presence of correlation between two variables X and Y simply means that when the value of one variable is found to change in one direction, the value of the other variable is found to change either in the same direction (i.epositive change) or in the opposite direction (i.e., negative change), in a definite way.<\/p>\n\n\n\n<p><strong>Question 10.<br>When is rank correlation more precise than simple correlation coefficient?<\/strong><\/p>\n\n\n\n<p><strong>Answer:<\/strong><\/p>\n\n\n\n<p>Rank correlation is more precise than simple correlation coefficient in the following situations<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When the Measurements of the Variables are Suspect e.g., in a remote village where measuring rods or weighing scales are not available, height and weight of people cannot be measured precisely but the people can be easily ranked in terms of height and weight.<\/li>\n\n\n\n<li>When Data is Qualitative It is difficult to quantify qualities such as fairness, honesty etc. Ranking may be a better alternative to quantification of qualities.<\/li>\n\n\n\n<li>When Data has Extreme Values Sometimes the correlation coefficient between two variables with extreme values may be quite different from the coefficient without the extreme values. Under these circumstances rank correlation provides a better alternative to simple correlation.<\/li>\n<\/ul>\n\n\n\n<p><strong>Question 11.<br>Does zero correlation mean independence?<\/strong><\/p>\n\n\n\n<p><strong>Answer:<\/strong><\/p>\n\n\n\n<p>No, zero correlation does not mean independence. If there is zero correlation (r<sub>XY<\/sub>&nbsp;= 0), it means the two variables are uncorrelated and there is no linear relation between them. However, other types of relation may be there and they may not be independent.<\/p>\n\n\n\n<p><strong>Question 12.<br>Can simple correlation coefficient measure any type of relationship?<\/strong><\/p>\n\n\n\n<p><strong>Answer:<\/strong><\/p>\n\n\n\n<p>No, simple correlation coefficient can measure only linear relationship.<\/p>\n\n\n\n<p><strong>Question 13.<br>List some variables where accurate measurement is difficult.<\/strong><\/p>\n\n\n\n<p><strong>Answer:<\/strong><\/p>\n\n\n\n<p>Accurate measurement is difficult in case of<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Qualitative variables such as beauty, intelligence, honesty, etc.<\/li>\n\n\n\n<li>It is also difficult to measure subjective variables such as poverty, development, etc which are interpreted differently by different people.<\/li>\n<\/ul>\n\n\n\n<p><strong>Question 14.<br>Interpret the values of r as 1, -1 and 0.<\/strong><\/p>\n\n\n\n<p><strong><br>Answer:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If r = 0 the two variables are uncorrelated. There is no linear relation between them. However, other types of relation may be there and hence the variables may not be independent.<\/li>\n\n\n\n<li>&nbsp;If r= 1 the correlation is perfectly positive. The relation between them is exact in the sense that if one increases, the other also increases in the same proportion and if one decreases, the other also decreases in the same proportion.<\/li>\n\n\n\n<li>If r = -1 the correlation is perfectly negative. The relation between them is exact in the sense that if one increases, the other decreases in the same proportion and if one decreases, the other increases in the same proportion.<\/li>\n<\/ul>\n\n\n\n<p><strong>Question 15.<br>Why does rank correlation coefficient differ from Pearsonian correlation coefficient?<\/strong><\/p>\n\n\n\n<p><strong>Answer:<\/strong><\/p>\n\n\n\n<p>Rank correlation coefficient differs from Pearsonian correlation coefficient in the following ways<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rank correlation coefficient is generally lower or equal to Karl Pearson\u2019s coefficient.<\/li>\n\n\n\n<li>Rank correlation coefficient is preferred to measure the correlation between qualitative variables as these variables cannot be measured precisely.<\/li>\n\n\n\n<li>The rank correlation coefficient uses ranks instead of the full set of observations that leads to some loss of information.<\/li>\n\n\n\n<li>If extreme values are present in the data, then the rank correlation coefficient is more precise and reliable.<\/li>\n<\/ul>\n\n\n\n<p><strong>Question 16.<br>Calculate the correlation coefficient between the heights of fathers in inches (X) and their sons (Y).<\/strong><br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"575\" height=\"53\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q16.png\" alt=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation Que. 16\" class=\"wp-image-208154\" srcset=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q16.png 575w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q16-300x28.png 300w\" sizes=\"auto, (max-width: 575px) 100vw, 575px\" \/><\/figure>\n\n\n\n<p><br><strong>Answer<\/strong>:<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"570\" height=\"565\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q16.1.png\" alt=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation Que. 16\" class=\"wp-image-208157\" srcset=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q16.1.png 570w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q16.1-300x297.png 300w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q16.1-150x150.png 150w\" sizes=\"auto, (max-width: 570px) 100vw, 570px\" \/><\/figure>\n\n\n\n<p><br>Note Answer: printed in NCERT is incorrect.<\/p>\n\n\n\n<p><strong>Question 17.<br>Calculate the correlation coefficient between X and Y and comment on their relationship.<\/strong><br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"568\" height=\"53\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.png\" alt=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation Que. 17\" class=\"wp-image-208159\" srcset=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.png 568w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17-300x28.png 300w\" sizes=\"auto, (max-width: 568px) 100vw, 568px\" \/><\/figure>\n\n\n\n<p><br><strong>Answer:<br><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"574\" height=\"186\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.1.png\" alt=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation Que. 17\" class=\"wp-image-208163\" srcset=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.1.png 574w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.1-300x97.png 300w\" sizes=\"auto, (max-width: 574px) 100vw, 574px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"462\" height=\"176\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.2.png\" alt=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation Que. 17\" class=\"wp-image-208164\" srcset=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.2.png 462w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q17.2-300x114.png 300w\" sizes=\"auto, (max-width: 462px) 100vw, 462px\" \/><\/figure>\n\n\n\n<p><br>As the value of r is zero, so there is no linear correlation between X and Y.<\/p>\n\n\n\n<p><strong>Question 18.<br>Calculate the correlation coefficient between X and Y and comment on their relationship.<\/strong><br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"574\" height=\"57\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q18.png\" alt=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation Que. 18\" class=\"wp-image-208168\" srcset=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q18.png 574w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q18-300x30.png 300w\" sizes=\"auto, (max-width: 574px) 100vw, 574px\" \/><\/figure>\n\n\n\n<p><br><strong>Answer<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"570\" height=\"485\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q18.1.png\" alt=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation Que. 18\" class=\"wp-image-208169\" srcset=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q18.1.png 570w, https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/03\/Statistics-for-Economics-Class-11-NCERT-Solutions-Chapter-7-Correlation-Q18.1-300x255.png 300w\" sizes=\"auto, (max-width: 570px) 100vw, 570px\" \/><\/figure>\n\n\n\n<p><br>As the correlation coefficient between the two variables is + 1, so the two variables are perfectly positive correlated.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ncert-solutions-for-11th-class-economics-chapter-7-nbsp-download-pdf\">NCERT Solutions for 11th Class Economics: Chapter 7:&nbsp;<strong>Download PDF<\/strong><\/h2>\n\n\n\n<p>NCERT Solutions for 11th Class Economics: Chapter 7-Correlation<\/p>\n\n\n\n<p><a href=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/08\/NCERT-Solutions-for-11th-Class-Economics_-Chapter-7-Correlation.pdf\"><strong>Download PDF<\/strong>: NCERT Solutions for 11th Class Economics: Chapter 7-Correlation PDF<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-chapterwise-ncert-solutions-for-class-11-economics\"><strong>Chapterwise NCERT Solutions for Class 11 Economics<\/strong>:<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-1-introduction-statistics-for-economics\/\">Chapter 1 Introduction<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-2-collection-of-data\/\">Chapter 2 Collection of Data<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-3-organisation-of-data\/\">Chapter 3 Organisation of Data<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-4-presentation-of-data\/\">Chapter 4 Presentation of Data<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-5-measures-of-central-tendency\/\">Chapter 5 Measures of Central Tendency<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-6-measures-of-dispersion\/\">Chapter 6 Measures of Dispersion<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-7-correlation\/\">Chapter 7 Correlation<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-8-index-numbers\/\">Chapter 8 Index Numbers<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-about-ncert\">About NCERT<\/h2>\n\n\n\n<p>The National Council of Educational Research and Training is an autonomous organization of the Government of India which was established in 1961 as a literary, scientific, and charitable Society under the Societies Registration Act. Its headquarters are located at Sri Aurbindo Marg in New Delhi. <a href=\"https:\/\/ncert.nic.in\/\" target=\"_blank\" rel=\"noreferrer noopener\">Visit the Official NCERT website<\/a> to learn more. <\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions\/\">NCERT Solutions<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-class-xi\/\">NCERT Solutions for Class 11<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-class-11-economics\/\">NCERT Solutions for Class 11 <strong>Economics<\/strong><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Class 11: Economics Chapter 7 solutions. Complete Class 11 Economics Chapter 7 Notes. NCERT Solutions for 11th Class Economics: Chapter 7-Correlation NCERT 11th Economics Chapter 7, class 11 Economics chapter 7 solutions Question 1.The unit of correlation coefficient between height in feet and weight in kgs is(a) kg\/feet(b) percentage(c) non-existent Answer: (c) Correlation coefficient (r) [&hellip;]<\/p>\n","protected":false},"author":302,"featured_media":628470,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"newspack_featured_image_position":"","newspack_post_subtitle":"","newspack_article_summary_title":"Overview:","newspack_article_summary":"","newspack_hide_updated_date":false,"newspack_show_updated_date":false,"footnotes":""},"categories":[1411,919],"tags":[1646],"boards":[1180],"class_list":["post-208111","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-book-solutions","category-class-11","tag-ncert-economics-class11","boards-ncert","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Solutions for Class 11, Economics Chapter 7 - IndCareer Schools<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation | Browse Class 11 Economics Chapters NCERT books - IndCareer Schools\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-11th-class-economics-chapter-7-correlation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NCERT Solutions for 11th Class Economics: Chapter 7-Correlation\" \/>\n<meta property=\"og:description\" content=\"Class 11: Economics Chapter 7 solutions. 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