{"id":7372,"date":"2025-09-18T11:04:51","date_gmt":"2025-09-18T03:04:51","guid":{"rendered":"https:\/\/www.akademisains.gov.my\/asm-focus\/?p=7372"},"modified":"2025-12-18T11:11:52","modified_gmt":"2025-12-18T03:11:52","slug":"asm-science-journal-tracking-water-quality-with-advanced-control-charts-2","status":"publish","type":"post","link":"https:\/\/www.akademisains.gov.my\/asm-focus\/asm-science-journal-tracking-water-quality-with-advanced-control-charts-2\/","title":{"rendered":"ASM Science Journal: Tracking Water Quality with Advanced Control Charts"},"content":{"rendered":"<p>This study explored whether statistical control charts, which are normally used in manufacturing, can help monitor <a href=\"https:\/\/en.wikipedia.org\/wiki\/Water_quality\">water quality<\/a> at a treatment plant in Kota Kinabalu. Four indicators were tracked: turbidity, pH, dissolved oxygen, and iron levels (Fe). Both <a href=\"https:\/\/en.wikipedia.org\/wiki\/Univariate_(statistics)\">univariate<\/a> charts (one variable at a time) and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Multivariate_statistics\">multivariate<\/a> charts (multiple variables together), including <a href=\"https:\/\/www.statisticshowto.com\/hotellings-t-squared\/\">Hotelling\u2019s T\u00b2<\/a> and Multivariate Cumulative Sum (MCUSUM), were tested.<\/p>\n<p>Because the data did not follow a normal distribution, the charts gave mixed and sometimes conflicting signals. Turbidity and iron occasionally exceeded limits, while pH and DO stayed stable. MCUSUM became overly sensitive, flagging many warnings, unlike Hotelling\u2019s T\u00b2. The study concludes that traditional charts may be unreliable here and suggests using nonparametric methods instead.<\/p>\n<p>Visit the <a href=\"https:\/\/www.akademisains.gov.my\/asmsj\/article\/an-application-of-univariate-and-multivariate-control-charts-in-monitoring-water-quality\/?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExSUVuZFhaeVdQUGQySW84cQEexTha93g9LYnMUnbak-IjEMUxOVThBky-GN2-jkIHnVcUdHfgnqaKyxM1UvI_aem_1x4i9FnG-RuzOGXXqXzduA\"><strong>ASM Science Journal<\/strong><\/a> to read the full article.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An ASM Science Journal study finds standard control charts give mixed water quality signals in Sabah; non-parametric methods may be more reliable.<\/p>\n","protected":false},"author":5,"featured_media":7373,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[1415],"tags":[],"class_list":["post-7372","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-september-2025"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-content\/uploads\/sites\/10\/2025\/12\/asm-scj-univariate-and-multivariate-control-charts-in-monitoring-water-quality.jpg","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pajCBQ-1UU","_links":{"self":[{"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/posts\/7372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/comments?post=7372"}],"version-history":[{"count":1,"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/posts\/7372\/revisions"}],"predecessor-version":[{"id":7598,"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/posts\/7372\/revisions\/7598"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/media\/7373"}],"wp:attachment":[{"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/media?parent=7372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/categories?post=7372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.akademisains.gov.my\/asm-focus\/wp-json\/wp\/v2\/tags?post=7372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}