{"id":50517,"date":"2024-04-15T23:11:28","date_gmt":"2024-04-15T23:11:28","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=50517"},"modified":"2024-04-15T23:11:28","modified_gmt":"2024-04-15T23:11:28","slug":"pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/","title":{"rendered":"PCA works better if there is 1. A linear structure in the data 2. If the data lies on a curved surface and not on a flat surface 3. If variables are scaled in the same unit"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;1 and 2&#8243; option2=&#8221;2 and 3&#8243; option3=&#8221;1 and 3&#8243; option4=&#8221;1,2 and 3&#8243; correct=&#8221;option3&#8243;]<!--more--><\/p>\n<p>The correct answer is C. PCA works better if there is a linear structure in the data and if variables are scaled in the same unit.<\/p>\n<p>PCA is a dimensionality reduction technique that projects data points onto a lower-dimensional space while preserving as much of the variance in the data as possible. This is done by finding a set of orthogonal axes (principal components) that maximize the variance of the data along each axis.<\/p>\n<p>PCA works best when the data has a linear structure. This means that the data points should be clustered together in a way that can be represented by a straight line. If the data has a curved structure, PCA will not be as effective at reducing the dimensionality of the data.<\/p>\n<p>PCA also works best when the variables are scaled in the same unit. This means that the values of each variable should be on the same scale. If the variables are not scaled in the same unit, PCA will not be able to accurately represent the variance in the data.<\/p>\n<p>In conclusion, PCA works better if there is a linear structure in the data and if variables are scaled in the same unit.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;1 and 2&#8243; option2=&#8221;2 and 3&#8243; option3=&#8221;1 and 3&#8243; option4=&#8221;1,2 and 3&#8243; correct=&#8221;option3&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[729],"tags":[],"class_list":["post-50517","post","type-post","status-publish","format-standard","hentry","category-machine-learning","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PCA works better if there is 1. A linear structure in the data 2. If the data lies on a curved surface and not on a flat surface 3. If variables are scaled in the same unit<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PCA works better if there is 1. A linear structure in the data 2. If the data lies on a curved surface and not on a flat surface 3. If variables are scaled in the same unit\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;1 and 2&#8243; option2=&#8221;2 and 3&#8243; option3=&#8221;1 and 3&#8243; option4=&#8221;1,2 and 3&#8243; correct=&#8221;option3&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T23:11:28+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"PCA works better if there is 1. A linear structure in the data 2. If the data lies on a curved surface and not on a flat surface 3. If variables are scaled in the same unit","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/","og_locale":"en_US","og_type":"article","og_title":"PCA works better if there is 1. A linear structure in the data 2. If the data lies on a curved surface and not on a flat surface 3. If variables are scaled in the same unit","og_description":"[amp_mcq option1=&#8221;1 and 2&#8243; option2=&#8221;2 and 3&#8243; option3=&#8221;1 and 3&#8243; option4=&#8221;1,2 and 3&#8243; correct=&#8221;option3&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T23:11:28+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/","url":"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/","name":"PCA works better if there is 1. A linear structure in the data 2. If the data lies on a curved surface and not on a flat surface 3. If variables are scaled in the same unit","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T23:11:28+00:00","dateModified":"2024-04-15T23:11:28+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/pca-works-better-if-there-is-1-a-linear-structure-in-the-data-2-if-the-data-lies-on-a-curved-surface-and-not-on-a-flat-surface-3-if-variables-are-scaled-in-the-same-unit\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"Machine learning","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/machine-learning\/"},{"@type":"ListItem","position":4,"name":"PCA works better if there is 1. A linear structure in the data 2. If the data lies on a curved surface and not on a flat surface 3. If variables are scaled in the same unit"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/50517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=50517"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/50517\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=50517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=50517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=50517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}