{"id":55471,"date":"2024-04-16T00:27:57","date_gmt":"2024-04-16T00:27:57","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=55471"},"modified":"2024-04-16T00:27:57","modified_gmt":"2024-04-16T00:27:57","slug":"problem-in-multi-regression-is","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/problem-in-multi-regression-is\/","title":{"rendered":"Problem in multi regression is ?"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a985f9b4b2ae\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    multicollinearity                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    overfitting                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    both multicollinearity &amp; overfitting                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    underfitting                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>C. both multicollinearity &amp; overfitting<\/strong><\/p>\n<p>Multicollinearity is a condition in which two or more independent variables are highly correlated with each other. This can cause problems in multiple <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> regression, as it can make it difficult to determine which independent variable is actually causing the change in the dependent variable.<\/p>\n<p>Overfitting is a condition in which a model fits the training data too closely, and as a result, does not generalize well to new data. This can happen when a model is trained on a small amount of data, or when the data is noisy.<\/p>\n<p>Both multicollinearity and overfitting can lead to inaccurate results in multiple regression. It is important to be aware of these problems and to take steps to avoid them.<\/p>\n<p>Here are some additional details about each of the options:<\/p>\n<ul>\n<li><strong>A. Multicollinearity<\/strong> is a condition in which two or more independent variables are highly correlated with each other. This can cause problems in multiple regression, as it can make it <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> difficult to determine which independent variable is actually causing the change in the dependent variable. For example, if you are trying to predict the price of a house, and you include both the size of the house and the number of bedrooms as independent variables, you may find that the two variables are highly correlated. This means that it will be difficult to tell whether the change in the price of the house is due to the change in the size of the house, or the change in the number of bedrooms.<\/li>\n<li><strong>B. Overfitting<\/strong> is a condition in which a model fits the training data too closely, and as a result, does not generalize well to new data. This can happen when a model is trained on a small amount of data, or when the data is noisy. For example, if you are trying to predict the price of a house, and you train your model on a dataset of only 10 houses, your model may fit the data very well, but it will not be able to generalize well to new houses. This is because the model has learned the specific details of the 10 houses in the dataset, but it has not learned the general patterns that apply to all houses.<\/li>\n<li><strong>C. Both multicollinearity &amp; overfitting<\/strong> can lead to inaccurate results in multiple regression. It is important to be aware of these problems and to take steps to avoid them. There are a number of ways to deal with multicollinearity, such as using ridge regression or principal component regression. There are also a number of ways to deal with overfitting, such as using cross-validation or regularization.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/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":[],"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>Problem in multi regression is ?<\/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\/problem-in-multi-regression-is\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Problem in 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