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Until the development of tau-equivalent reliability, split-half reliability using the Spearman-Brown formula was the only way to obtain inter-item reliability. [4] [5] After splitting the whole item into arbitrary halves, the correlation between the split-halves can be converted into reliability by applying the Spearman-Brown formula.
Reliability does not imply validity.That is, a reliable measure that is measuring something consistently is not necessarily measuring what is supposed to be measured.
Often discussed in tandem with KR-20, is Kuder–Richardson Formula 21 (KR-21). [4] KR-21 is a simplified version of KR-20, which can be used when the difficulty of all items on the test are known to be equal.
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Bahasa Indonesia: Undang-Undang Republik Indonesia Nomor 1 Tahun 2020 tentang Pengesahan Persetujuan Kemitraan Ekonomi Komprehensif Indonesia-Australia (Indonesia-Australia Comprehensive Economic Partnership Agreement)
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