teachers’ ability in pronouncing the neutral and non neutral suffixes.

3-7 Data analysis
To analyze the data, a set of statistical procedures are used such as descriptive and inferential statistics. Descriptive statistics includes statistical procedures that are used to organize and describe the sample. Referential is concerned with making predictions or inferences about sample from observation and analysis of a sample that is the result of the analysis which is taken and can be organized.
The Man-whitney U Test was used to describe and analyze data based on gender, academic degree and place of teaching. The Mann-Whitney U test is used to compare differences between two independent groups when the dependent variable is either ordinal or continuous, but not normally distributed. The Man-Whitney U Test is a nonparametric test of the null hypothesis that two populations are the same against an alternative hypothesis, especially that a particular population tends to have larger values than the other. It has greater efficiency than the t-test on non-normal distributions, such as a mixture of normal distributions, and it is nearly as efficient as the t-test on normal distributions (Lehmann, Erich L. 1975).
As there is three ranges for years of experience teaching English, Kruskal-Wallis Test was used to describe and analyze data. The Kruskal-Wallis one-way analysis of variance by ranks (named after William Kruskal and W. Allen Wallis) is a non-parametric method for testing whether samples originate from the same distribution ( Kruskal; Wallis 1952). It is used for comparing two or more samples that are independent, and that may have different sample sizes, and extends the Mann-Whitney U test to more than two groups (Corder, Gregory W.; Foreman, Dale I. 2009). The parametric equivalent of the Kruskal-Wallis test is the one-way analysis of variance (ANOVA). Since it is a non-parametric method, the Kruskal-Wallis test does not assume a normal distribution of the residuals, unlike the analogous one-way analysis of variance (Siegel; Castellan 1988).

Chapter Four
Results and Discussion

4-1 overview
This chapter presents findings that serve as answers to the research questions of this study. This chapter consists of four parts: the first part is demographic information, the next one is descriptive statistics, then investigating research hypotheses by inferential statistics and the last part of this chapter is discussion. This chapter includes some tables and figures; afterwards the analysis of each table and figure will be stated.

4-2 Demographic information
40 Iranian EFL teachers teaching English at different high schools and institutes in Ilam were asked to participate in this study (20 females and 20 males). None of teachers studied in English speaking countries. Table 4-1 gives background information about the forty teacher participants. 17males and 5 females held B.A. degree in TEFL (teaching English as a foreign language), and 18 others (3 males and 15 females) held a M.A. degree. They were classified into two groups male and female with B.A. and M.A. degree who taught at different schools and institutes. In this research, 40 teachers in Ilam school and institute were asked to participate and they had at least one year of foreign language teaching experience.

Table 4-1 Background information about participants of the study
Participants
Frequency
Percent
Gender
Female
20
.50

Male
20
.50

Total
40
100
Academic degree
M.A
18
.45

B.A
22
.55

Total
40
100
Place
Institute
20
.50

School
20
.50

Total
40
100
Experience
1-7 years
21
52.5

8-14 years
11
27.5

15-21 years
8
20

Total
40
100

Table 4-1 shows the percent of each group of participants according to the included factors that of this study.

4-3 Descriptive statistics
The aim of this study was to examine the effects of the gender, experience, academic degree and the teaching place of English teachers on the pronunciation of the neutral and non-neutral suffixes. This part will show the tables and figures related to the answers collected from participants based on gender, experience, academic degree and the teaching place of English teachers. These tables and figures show the differences in pronouncing the neutral and non-neutral suffixes according to those four factors: gender, experience, academic degree and the teaching place of English teachers.

4-3-1 The frequency of the answers to the pronunciation questions
Table 4-2 indicates the answers of participants. It gives an overview to the answers.
Table 4-2 The frequency of the answers to the pronunciation questions
In Correct answers
Correct answers
Question
2
38
1
17
23
2
20
20
3
20
20
4
22
18
5
21
19
6
15
25
7
3
37
8
23
17
9
12
28
10
19
21
11
25
15
12
3
37
13
21
19
14
3
37
15
1
39
16
27
13
17
4
36
18
17
23
19
21
19
20
9
31
21
20
20
22
13
27
23
26
14
24
5
35
25
1
39
26
23
17
27
11
29
28
21
19
29
19
21
30

As table 4-2 indicates, the correct and in-correct participants’ answers of questions give background information about the frequency of the participants’

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