3. Readability of the Test
Readability test are indicator that measure how easy the direction and instruction can be read and understood. For evaluators, readability statistics can be solid predicators
of the language difficulty level or particular document. The essential information in an evaluation document should be easily understandable.
20
Kouname’s research used to know readability of the students’ writing ability in descriptive text test instrument.
The participants asked to evaluate instructions and understandability of each item on a scale of 1 to 10, where 1 describes an item that is easy to read and 10 describes an
item that is difficult to read.
21
The questions was tested individually. The questionnaire for readability was attached and the result of readability test was 1.77.
based on the category, the readability of writing descriptive text test was easy to read. It can be seen in appendix 11 and 12.
K. Data Analysis
1. Prerequisite Test
a. Normality Test
The Normality test are supplementary to the graphical assessment of normality.
22
It means that normality is used to know whether the data have normal distribution or not. In this
research the writer used statistical computation by using SPSS Statistical Package for Social
20
Julien B. Kouame, Using Readability Test to Improve the Accuracy of Evaluation Documents Intended For Low-Literate Paarticipants, Journal of Multy Desciplinary Evaluation, Vol.6,
Number 1 ISSN 1556-8180 August 2010, http:www.jmde.com, retrieved on April 2
nd
, 2016
21
Ibid.
22
Asghar Ghasemi, Saleh Zahediasl, Normality Tests for Statistical Analysis: A Guide for Non-Statisticians, International Journal, Tehran: Int J Endocrinol Metab 2012, p. 2,
http:www.ncbi.nlm.nih.gov, retrieved on October 11
th
, 2016
Science of version 16 was used for normality test. SPSS is a comprehensive system for analyzing data. SPSS can take data from almost any type of file and use them to generate
tabulated reports, charts and plots of distributions
and trends, descriptive statistics and complex statistical analysis.
23
It means that SPSS is a program that can be used to perform data entry and analysis to create tables and graphs. The result of normality
test can be seen appendix 22. In this case, the criteria of normality test as follow: The hypotheses formulas are:
Ho: The data are normally distributed. Ha : The data are not normally distributed.
While the criteria acceptance or rejection of normality test are H
o
is accepted if sig α = 0.05
H
a
is accepted if sig α = 0.05
b. Linearity Test
Linearity test is used to know the size of the linear relationship between two variables x and y. before analyzing the data by using Pearson’s product moment formula, the
first checked out whether the data obtained were linear or not because this was one of requirements to be able to use the Pearson’s product moment formula. In this case,
Linearity test used SPSS Statistical Package for Social Science to check it in order to make the writer easy. Then the result of linearity checked by comparing with
23
Marija Norusis, SPSS Base 16.0 User’s Guide, Chicago: Prentice Hall, 2007, p. 3
significant level α = 0.05. If the result was lower than α, it means that the data were linear.
c. Hypothetical test
The hypothesis is very important to find out whether or not the alternative hypothesis H
a
or null hypothesis H
o
is accepted in this research. Non parametric statistics, rank spearman’s formula was used for hypothesis test. Rank spearman’s formula is
used to find the relationship between two variables, but there are unmet requirements for using pearson’s correlation. The requirements include the data was not of value,
or the data not have a normal distribution.
24
It means that rank spearman’s formula is an alternative from paramentric test bivariate correlation pearson’s correlation to
find the relationship between two variables that not have normal distribution. In this research, rank sp
earman’s formula was used for the hypothesis test because a result of one of the data that is present tense mastery test did not have a normal distribution. It
can be seen appendix 22. In this case, statistical computation by using SPSS Statistical Package for Social
Science of version 16 was used for hypothetical test. The purpose of using SPSS of version 16 in this case was for practicality and efficiency in the study. While the
criteria acceptance or rejection of normality test are: H
a
is accepted if sig α = 0.05
H
o
is accepted if sig α = 0.05
24
Ag. Bambang Setiyadi, Op. Cit. p. 204
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