Lexical Density of Reading Text in English Textbook for grade XI Senior High School

This study deals with the lexical density especially the lexical items of English
reading texts in the textbook for senior high school. The objectives of the study
are to find out the level difficulties of lexical density used in reading text of
English textbook and the reason why is level difficulties of lexical density used
the way it is in reading text of English textbook. This study was conducted by
descriptive method with qualitative approach. The data of this research were the
English reading texts of of Bahasa Inggris textbook for grade XI senior high
school published by Kementrian Pendidikan dan Kebudayaan Republik Indonesia.
The result of the analysis showed that: (1) The level difficulties of lexical density
that used in reading text of English textbook is medium lexical density. (2) The
lexical density of narrative text entitled The Enchanted Fish have 401 content
words and 581 grammatical function with total percentage of lexical density
40.83%, the lexical density of descriptive text entitled Cheetahs have 162 content
words and 137 grammatical function with total percentage of lexical density
54.18%, and the lexical density of explanation text entitled Earthquakes have 307
content words and 226 grammatical function with total percentage of lexical
density 57.59%.