{"id":34821,"date":"2023-09-07T13:56:14","date_gmt":"2023-09-07T06:56:14","guid":{"rendered":"https:\/\/info.populix.co\/?p=34821"},"modified":"2024-01-03T07:59:13","modified_gmt":"2024-01-03T07:59:13","slug":"z-test-adalah","status":"publish","type":"post","link":"https:\/\/info.populix.co\/articles\/z-test-adalah","title":{"rendered":"Z Test atau Uji Z: Pengertian, Rumus, dan Jenisnya"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Mungkin Anda jarang atau bahkan belum pernah mendengar istilah Z test. Melansir laman <em><a href=\"https:\/\/researchconnections.org\/research-tools\/research-glossary\/z\" target=\"_blank\" rel=\"noopener nofollow\">Research Connections<\/a><\/em>, Z test adalah uji statistik yang digunakan untuk membandingkan <em>mean <\/em>dari dua sampel independen atau <em>mean <\/em>dari satu sampel dengan beberapa nilai tetap. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pengujian ini mengasumsikan bahwa populasi dari mana sampel diambil berdistribusi normal. Ini digunakan saat menguji perbedaan untuk sampel besar (lebih dari 30 observasi) dan untuk sampel lebih kecil yang varians populasinya diketahui. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Apa Itu Z Test?<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230829-152153-1.jpg\" alt=\"z test adalah\" class=\"wp-image-34831\" srcset=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230829-152153-1.jpg 800w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230829-152153-1-325x217.jpg 325w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230829-152153-1-768x512.jpg 768w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230829-152153-1-200x133.jpg 200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Source: Freepik<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Uji Z atau Z test adalah alat statistik yang digunakan dalam pengujian <strong><a href=\"https:\/\/info.populix.co\/articles\/hipotesis-adalah\/\" target=\"_blank\" rel=\"noopener\">hipotesis<\/a><\/strong>. Ini adalah metode yang tepat jika ukuran sampelnya besar. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Z test sebenernya mirip dengan T test, tetapi tetap ada perbedaannya, yakni T test dilakukan untuk ukuran sampel kecil atau ketika variansnya tidak diketahui. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mengutip situs <em><a href=\"https:\/\/www.wallstreetmojo.com\/z-test\/\" target=\"_blank\" rel=\"noopener nofollow\">WellStreetMojo<\/a><\/em>, Z test diklasifikasikan menjadi dua, yakni:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Uji satu sampel membandingkan rata-rata sampel tunggal dengan rata-rata populasi.<\/li>\n\n\n\n<li>Uji dua sampel membandingkan rata-rata dua sampel.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Baca juga: <a href=\"https:\/\/info.populix.co\/articles\/observasi-partisipan-adalah\/\" target=\"_blank\" rel=\"noopener\">Observasi Partisipan Adalah: Definisi, Kelebihan, Kekurangan<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Rumus Z Test<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Berikut ini rumus Z test atau uji Z yang perlu Anda ketahui.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Z = (x\u0305 \u2013 \u03bc0) \/ (\u03c3 \/\u221an)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Keterangan:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>x\u0305<\/strong> adalah mean sampel;<\/li>\n\n\n\n<li><strong>\u03bc0<\/strong> adalah rata-rata populasi;<\/li>\n\n\n\n<li><strong>\u03c3<\/strong> adalah simpangan baku;<\/li>\n\n\n\n<li><strong>n<\/strong> adalah ukuran sampel.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Berdasarkan hasil uji Z, penelitian memperoleh kesimpulan hipotesis. Ini bisa berupa <strong><a href=\"https:\/\/info.populix.co\/articles\/null-hypothesis-adalah\/\" target=\"_blank\" rel=\"noopener\">hipotesis <em>null<\/em><\/a><\/strong><em> <\/em>atau <strong><a href=\"https:\/\/info.populix.co\/articles\/hipotesis-alternatif-adalah\/\" target=\"_blank\" rel=\"noopener\">hipotesis alternatif<\/a><\/strong>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mereka diukur menggunakan rumus berikut ini:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H0: =\u03bc0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">atau<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ha: \u03bc\u2260\u03bc0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Keterangan:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H0 = Hipotesis Nol <\/li>\n\n\n\n<li>Ha = Hipotesis Alternatif<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Hipotesis nol terbukti benar jika nilai <em>mean <\/em>sama dengan <em>mean <\/em>populasi. Jika tidak, hipotesis alternatif akan dipertimbangkan. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Baca juga: <a href=\"https:\/\/info.populix.co\/articles\/hipotesis-alternatif-adalah\/\" target=\"_blank\" rel=\"noopener\">Hipotesis Alternatif Adalah: Pengertian, Jenis, Contoh<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Jenis Z Test<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ada 3 jenis uji Z atau Z test, berikut ini penjelasannya mengutip dari situs <em><a href=\"https:\/\/www.geeksforgeeks.org\/z-test\/#main\" target=\"_blank\" rel=\"noopener nofollow\">GeeksforGeeks<\/a><\/em>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Uji Sisi Kiri<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"458\" src=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132153.png\" alt=\"jenis uji Z\" class=\"wp-image-34830\" srcset=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132153.png 800w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132153-325x186.png 325w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132153-768x440.png 768w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132153-200x115.png 200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Source: GeeksforGeeks<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dalam pengujian ini, wilayah penolakan terletak di paling kiri distribusi. Di sini hipotesis nol adalah bahwa nilai yang diklaim kurang dari atau sama dengan nilai rata-rata populasi. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Uji Sisi Kanan<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"431\" src=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132231.png\" alt=\"jenis uji Z\" class=\"wp-image-34829\" srcset=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132231.png 800w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132231-325x175.png 325w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132231-768x414.png 768w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132231-200x108.png 200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Source: GeeksforGeeks<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dalam pengujian ini, wilayah penolakan terletak di paling kanan distribusi. Di sini hipotesis nol adalah bahwa nilai yang diklaim kurang dari atau sama dengan nilai rata-rata populasi. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Uji Dua Sisi<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"410\" src=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132259.png\" alt=\"jenis uji Z\" class=\"wp-image-34828\" srcset=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132259.png 800w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132259-325x167.png 325w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132259-768x394.png 768w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/09\/capture-20230907-132259-200x103.png 200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Source: GeeksforGeeks<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dalam pengujian ini, wilayah penolakan terletak di kedua distribusi ekstrem. Di sini hipotesis nol adalah bahwa nilai yang diklaim sama dengan nilai rata-rata populasi. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">***<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Baca juga: <a href=\"https:\/\/info.populix.co\/articles\/cross-sectional-study-adalah\/\" target=\"_blank\" rel=\"noopener\">Cross-sectional Study Adalah: Definis serta Contoh Penelitian<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Z test adalah alat statistik yang sangat berguna dalam analisis data riset pasar. Dengan memahami dan menguasi konsep ini, Anda dapat mengambil keputusan lebih tepat dan informatif dalam menghadapi tantangan yang kompleks di dunia bisnis. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jika Anda tertarik untuk mendalami lebih detail tentang Z test atau mencari bantuan dalam melaksanakan riser pasar yang efektif, Anda dapat memanfaatkan <strong><a href=\"https:\/\/populix.onelink.me\/iAix\/blogEnterprise\" target=\"_blank\" rel=\"noopener\">Populix for Enterprise<\/a><\/strong>. Dengan bantuan <strong><a href=\"https:\/\/populix.onelink.me\/iAix\/blogEnterprise\" target=\"_blank\" rel=\"noopener\">Populix for Enterprise<\/a><\/strong>, Anda dapat mengoptimalkan strategi bisnis dan meraih kesuksesan yang lebih besar. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/populix.onelink.me\/iAix\/blogEnterprise\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"1400\" height=\"321\" src=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/04\/Ppx-Enterprise-2-1400x321.jpg\" alt=\"riset pasar Populix\" class=\"wp-image-16889\" srcset=\"https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/04\/Ppx-Enterprise-2-1400x321.jpg 1400w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/04\/Ppx-Enterprise-2-325x75.jpg 325w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/04\/Ppx-Enterprise-2-768x176.jpg 768w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/04\/Ppx-Enterprise-2-1536x352.jpg 1536w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/04\/Ppx-Enterprise-2-200x46.jpg 200w, https:\/\/info.populix.co\/articles\/wp-content\/uploads\/2023\/04\/Ppx-Enterprise-2.jpg 1823w\" sizes=\"(max-width: 1400px) 100vw, 1400px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Baca juga: <a href=\"https:\/\/info.populix.co\/articles\/two-way-anova\/\" target=\"_blank\" rel=\"noopener\">Two-Way ANOVA: Pengertian, Cara Menggunakan, Contoh<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mungkin Anda jarang atau bahkan belum pernah mendengar istilah Z test. Melansir laman Research Connections, Z test adalah uji statistik yang digunakan untuk membandingkan mean dari dua sampel independen atau mean dari satu sampel dengan beberapa nilai tetap. Pengujian ini mengasumsikan bahwa populasi dari mana sampel diambil berdistribusi normal. Ini digunakan saat menguji perbedaan untuk [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":39400,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_angie_page":false,"_eb_attr":"","postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"page_builder":"","footnotes":""},"categories":[324],"tags":[342],"class_list":["post-34821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kamus-riset","tag-kamus-riset-id"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/posts\/34821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/comments?post=34821"}],"version-history":[{"count":5,"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/posts\/34821\/revisions"}],"predecessor-version":[{"id":34834,"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/posts\/34821\/revisions\/34834"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/media\/39400"}],"wp:attachment":[{"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/media?parent=34821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/categories?post=34821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/info.populix.co\/articles\/wp-json\/wp\/v2\/tags?post=34821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}