{"id":58930,"date":"2024-04-16T01:28:11","date_gmt":"2024-04-16T01:28:11","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=58930"},"modified":"2024-04-16T01:28:11","modified_gmt":"2024-04-16T01:28:11","slug":"residual-plots-investigate-normality-of-the-errors","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/residual-plots-investigate-normality-of-the-errors\/","title":{"rendered":"Residual . . . . . . . . plots investigate normality of the errors."},"content":{"rendered":"<p>[amp_mcq option1=&#8221;RR&#8221; option2=&#8221;PP&#8221; option3=&#8221;QQ&#8221; option4=&#8221;None of the mentioned&#8221; correct=&#8221;option3&#8243;]<!--more--><\/p>\n<p>The correct answer is: <strong>C. QQ<\/strong><\/p>\n<p>A residual plot is a graph of the residuals (the difference between the observed values and the fitted values) against the fitted values. Residual plots can be used to investigate the normality of the errors, the linearity of the relationship between the independent and dependent variables, and the homoscedasticity of the errors.<\/p>\n<p>A QQ plot is a type of residual plot that is used to investigate the normality of the errors. A QQ plot is a scatterplot of the standardized residuals against the theoretical quantiles of a normal distribution. If the errors are normally distributed, the points in the QQ plot should fall close to a straight line.<\/p>\n<p>The other options are incorrect because they are not types of residual plots.<\/p>\n<ul>\n<li><strong>A. RR plots<\/strong> are residual vs. response plots. These plots can be used to investigate the linearity of the relationship between the independent and dependent variables.<\/li>\n<li><strong>B. PP plots<\/strong> are probability plots. These plots can be used to investigate the normality of the residuals.<\/li>\n<li><strong>D. None of the mentioned<\/strong> is also incorrect because it is not a type of residual plot.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;RR&#8221; option2=&#8221;PP&#8221; option3=&#8221;QQ&#8221; option4=&#8221;None of the mentioned&#8221; 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":[738],"tags":[],"class_list":["post-58930","post","type-post","status-publish","format-standard","hentry","category-data-science-miscellaneous","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>Residual . . . . . . . . plots investigate normality of the errors.<\/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\/residual-plots-investigate-normality-of-the-errors\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Residual . . . . . . . . plots investigate normality of the errors.\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;RR&#8221; 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