Using confidence intervals to determine adequate item sample sizes for vocabulary tests: An essential but overlooked practice

Keyphrases

• Confidence Interval 100%
• As(V) 100%
• Vocabulary Test 100%
• Word Frequency 100%
• Sampling Rate 50%
• Target Word 50%
• Vocabulary Size 50%
• Vocabulary Knowledge 50%
• Bootstrapping Method 50%
• Test Takers 50%
• Language Testing 50%
• Vocabulary Levels 50%
• L1 Japanese 50%
• Turn-based 50%
• Word Frequency Lists 50%
• Language Corpus 50%
• Test Developer 50%
• Individual Learners 50%
• Sampling Size 50%