Understanding the role of text length, sample size and vocabulary size in determining text coverage

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bitstream:

http://scholarspace.manoa.hawaii.edu/bitstream/10125/66598/1/17_1_10125_66598_chujo.pdf

bitstream_txt:

http://scholarspace.manoa.hawaii.edu/bitstream/10125/66598/2/17_1_10125_66598_chujo.pdf.txt

collection:

Volume 17, No. 1

contributor.author:

Chujo, Kiiyomi Utiyama, Masao

date.accessioned:

2020-05-22T02:00:33Z

date.available:

2020-05-22T02:00:33Z

date.issued:

2005-04

description.abstract:

Although the use of "text coverage" to measure the intelligibility of reading materials is increasing in the field of vocabulary teaching and learning, to date there have been few studies which address the methodological variables that can affect reliable text coverage calculations. The objective of this paper is to investigate how differing vocabulary size, text length, and sample size might affect the stability of text coverage, and to define relevant parameters. In this study, 23 varying vocabulary sizes taken from the high frequency words of the British National Corpus and 26 different text lengths taken from the Time Almanac corpus were analyzed using 10 different sample sizes in 1,000 iterations to calculate text coverage, and the results were analyzed using the distribution of the mean score and standard deviation. The results of the study empirically demonstrate that text coverage is more stable when the vocabulary size is larger, the text length is longer, and more samples are used. It was also found that the stability of text coverage is greater from a larger number of shorter samples than from a fewer number of longer samples. As a practical guideline for educators, a table showing minimum parameters is included for reference in computing text coverage calculations.

description.provenance:

Made available in DSpace on 2020-05-22T02:00:33Z (GMT). No. of bitstreams: 1 17_1_10125_66598_chujo.pdf: 73979 bytes, checksum: f61ce46e851609301a96bd2ba9090538 (MD5) Previous issue date: 2005-04

endingpage:

22

identifier.doi:

10125/66598

identifier.issn:

1539-0578

identifier.uri:

http://hdl.handle.net/10125/66598

number:

1

publisher:

University of Hawaii National Foreign Language Resource Center Center for Language & Technology

rfl.topic:

Lexis

site_url:

/rfl/item/95

startingpage:

1

subject:

text coverage sample size text length vocabulary size standard deviation sampling methodology

title:

Understanding the role of text length, sample size and vocabulary size in determining text coverage

type:

Article

type.dcmi:

Text

volume:

17