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d. Sampling Sampling  is  the  act  of  drawing  a  sample  from  a  population  Mason  and
Bramble,  1997:113.  In  this  research,  the  writer  used  random  sampling.  quasi experimental
3.3. Variables
Variables are the conditions or characteristics that the experimenter manipulates, controls, and observes.
a. Independent Variables Related to this study, the  independent variable of this research  is the teaching
listening technique that is Orthographic Transcription Technique. b. Dependent Variables
Related  to  th is  study,  the  dependent  variable  of  this  research  is  students‟
listening comprehension skill.
3.4. Instrument
A test is one of the research instruments that can be used in measuring the research.    Brown  2004:3    stated  that  a  test  is  a  system  to  evaluate  the  skill,
understanding, or performance of someone in a particular field.   The test used in this study is a multiple choice test based on listening, structure and reading texts.
The test is adapted from Indonesian International Education foundation.
3.5. The Technique of Collecting Data
In collecting the data a test is used to examine and measure the qualities of someone  or  the  knowledge  or  abilities  of  someone.    A  test  can  be  defined  as  a
© Master Program in Linguistics, Diponegoro University www.eprints.undip.ac.id
systematic procedure for observing one‟s behaviour and describing it with the aid of numerical devices.
The research involves pre and post-test for both experimental and control group.    The  test  is  a  proficiency  test that  is  TOEFL  ITP  test.    Brown  2004:44
suggest  that  a  proficiency  test  is  not  limited  to  any  one  course,  curriculum  or single skill  in the  language; rather, it tests overall  ability.  Proficiency tests have
traditionally  consisted  of  standardized  multiple  choice  questions  about vocabulary, reading comprehension and aural comprehension.
The  data  used  in  this  research  is  only  the  listening  comprehension  part since  the  orthographic  transcription  technique  is  implemented  to  improve  the
students listening skill.  The listening comprehension part consists of 50 questions that is divided into three part; short conversation, longer conversation and talks.
3.6 .The Technique of Analyzing Data