{"id":505,"date":"2020-03-28T10:39:55","date_gmt":"2020-03-28T09:39:55","guid":{"rendered":"http:\/\/estatistika.ku.sk\/?page_id=505"},"modified":"2022-01-09T03:06:59","modified_gmt":"2022-01-09T02:06:59","slug":"reliabilita","status":"publish","type":"page","link":"https:\/\/estatistika.ku.sk\/index.php\/psychometricke-charakteristiky-vyskumneho-nastroja\/reliabilita\/","title":{"rendered":"Reliabilita"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\"><strong>Reliabilita<\/strong> je spo\u013eahlivos\u0165, s ktorou test meria to, \u010do m\u00e1 mera\u0165. Ide o <strong>presnos\u0165<\/strong> merania, bez oh\u013eadu na to \u010do test meria.<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\">Odzrkad\u013euje spo\u013eahlivos\u0165 v\u00fdskumn\u00e9ho n\u00e1stroja (posudzovacej \u0161k\u00e1ly, dotazn\u00edka, testu at\u010f.).<\/span><\/li>\n<li><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\">Poukazuje na presnos\u0165 n\u00e1stroja (vyjadruje ve\u013ekos\u0165 ch\u00fdb vznikaj\u00facich pri meran\u00ed).<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\">Postupy k ur\u010deniu reliability:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\"><strong>Opakovan\u00e9 merania (retest-reliabilita)<\/strong> &#8211; spo\u010d\u00edva v zis\u0165ovan\u00ed miery zhody v\u00fdsledkov pri opakovanom meran\u00ed t\u00fdch ist\u00fdch os\u00f4b, t\u00fdm ist\u00fdm testom po \u010dasovom odstupe &#8211; <strong>zis\u0165uje sa stabilita v\u00fdskumn\u00e9ho n\u00e1stroja v \u010dase.<\/strong> Pou\u017e\u00edva sa pri opakovan\u00ed administr\u00e1cie v\u00fdskumn\u00e9ho n\u00e1stroja (napr. dotazn\u00edka). Ten ist\u00fd v\u00fdskumn\u00fd n\u00e1stroj sa zad\u00e1va t\u00fdm ist\u00fdm respondentom s \u010dasov\u00fdm odstupom (napr. po mesiaci, po roku, &#8230;). N\u00e1sledne sa vypo\u010d\u00edta miera zhody medzi v\u00fdsledkami prv\u00e9ho a druh\u00e9ho merania \u2013 pou\u017e\u00edva sa <a href=\"http:\/\/estatistika.ku.sk\/index.php\/korelacna-analyza\/\">korela\u010dn\u00fd koeficient<\/a>. Zhoda dvoch metodologick\u00fdch n\u00e1strojov by mala by\u0165 minim\u00e1lne 0,7 (teda ve\u013ekos\u0165 korela\u010dn\u00e9ho koeficientu (\u201er\u201c) by mala by\u0165 minim\u00e1lne 0,7 a viac).<\/span><\/li>\n<li><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\"><strong>Meranie paraleln\u00fdch testov<\/strong> \u2013 znamen\u00e1 zhodu merania s in\u00fdm ekvivalentn\u00fdm meran\u00edm rovnak\u00e9ho kon\u0161truktu (napr. ak existuj\u00fa dve verzie A a B toho ist\u00e9ho testu a pod.).<\/span><\/li>\n<li><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\"><strong>Delenie testu na dve polovice<\/strong> (split-half) reliabilita \u2013 ak by sme test rozdelili n\u00e1hodne na dve polovice, dosiahnut\u00e9 sk\u00f3re by v nich malo by\u0165 pribli\u017ene rovnak\u00e9. Jej podstata spo\u010d\u00edva v predpoklade, \u017ee v pr\u00edpade, \u017ee test meria spo\u013eahlivo, tak meraj\u00fa spo\u013eahlivo i jeho \u010dasti.<\/span><\/li>\n<li><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\"><strong>Vn\u00fatorn\u00e1 konzistencia testu<\/strong> &#8211; \u00farove\u0148 polo\u017eiek &#8211; ak m\u00e1 test mera\u0165 vymedzen\u00fa premenn\u00fa spo\u013eahlivo ako celok, potom by mali spo\u013eahlivo mera\u0165 i v\u0161etky jeho jednotliv\u00e9 \u010dasti \u2013 v\u0161etky polo\u017eky testu. Pod\u013ea Gr\u00f6pela (2008) je to nie\u010do ako \u201evn\u00fatorn\u00e1 korel\u00e1cia v\u0161etk\u00fdch polo\u017eiek navz\u00e1jom\u201c. Ozna\u010duje sa aj ako<strong> Cronbachovo alfa.<\/strong> V\u00fdskumn\u00fd n\u00e1stroj (posudzovacia \u0161k\u00e1la, test, dotazn\u00edk) je reliabiln\u00fd v pr\u00edpade, \u017ee Cronbachovo alfa je vy\u0161\u0161ie ako hranica stanovenej konvencie <strong>(\u03b1 &gt; 0,70).\u00a0<\/strong><\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\"><strong><span style=\"color: #000000;\">V\u0161etky vy\u0161\u0161ie uveden\u00e9 typy reliability je mo\u017en\u00e9 po\u010d\u00edta\u0165 v programe v SPSS:<\/span><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\">Cesta: <em>Analyze &#8211; Scale &#8211; Reliability Analysis&#8230; <\/em>&#8211; z\u00edskame okno &#8211; vi\u010f obr\u00e1zok<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\">Ak rozklikneme ponuku &#8222;Model&#8220;, okrem mo\u017enosti v\u00fdpo\u010dtu vn\u00fatornej konzistencie (Alpha), dostaneme i mo\u017enosti v\u00fdpo\u010dtu Split-half, Guttman, Parallel.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: helvetica, arial, sans-serif; font-size: 14pt;\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-1515\" src=\"http:\/\/estatistika.ku.sk\/wp-content\/uploads\/2021\/12\/RE-1.jpg\" alt=\"\" width=\"551\" height=\"328\" srcset=\"https:\/\/estatistika.ku.sk\/wp-content\/uploads\/2021\/12\/RE-1.jpg 551w, https:\/\/estatistika.ku.sk\/wp-content\/uploads\/2021\/12\/RE-1-300x179.jpg 300w\" sizes=\"(max-width: 551px) 100vw, 551px\" \/><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Reliabilita je spo\u013eahlivos\u0165, s ktorou test meria to, \u010do m\u00e1 mera\u0165. Ide o presnos\u0165 merania, bez oh\u013eadu na to \u010do test meria. Odzrkad\u013euje spo\u013eahlivos\u0165 v\u00fdskumn\u00e9ho n\u00e1stroja (posudzovacej \u0161k\u00e1ly, dotazn\u00edka, testu at\u010f.). Poukazuje na presnos\u0165 n\u00e1stroja (vyjadruje ve\u013ekos\u0165 ch\u00fdb vznikaj\u00facich pri meran\u00ed). Postupy k ur\u010deniu reliability: Opakovan\u00e9 merania (retest-reliabilita) &#8211; spo\u010d\u00edva v zis\u0165ovan\u00ed miery zhody v\u00fdsledkov [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":496,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"templates\/template-full-width.php","meta":{"footnotes":""},"class_list":["post-505","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/pages\/505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/comments?post=505"}],"version-history":[{"count":10,"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/pages\/505\/revisions"}],"predecessor-version":[{"id":2236,"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/pages\/505\/revisions\/2236"}],"up":[{"embeddable":true,"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/pages\/496"}],"wp:attachment":[{"href":"https:\/\/estatistika.ku.sk\/index.php\/wp-json\/wp\/v2\/media?parent=505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}