34
c. Validity Test Instruments Family Environment
Instruments of teacher profession perception consist of
27 statement. Based on the validity test results, there were 8 items did not valid. The
validity test was carried out by 30 respondents from accounting education students level 2013. The formula used the product moment correlation
with an error rate of 10 and r
tabel
0.306. The validity of each item statement can be obtained if r
count
r
table
. The results of showed as below:
Tabel 10. The Results of Validity Test Instrument of Family Environment
Item of Statements
r
count
Explanations
1 0,539
VALID 2
0,390 VALID
3 0,518
VALID 4
0,628 VALID
5 0,318
VALID 6
0,377 VALID
7 -0,030
NOT VALID 8
0,339 VALID
9 0,542
VALID 10
0,376 VALID
11 0,514
VALID 12
0,628 VALID
13 0,516
VALID 14
0,579 VALID
15 -0,140
NOT VALID 16
0,487 VALID
17 0,698
VALID 18
0,682 VALID
19 0,460
VALID 20
0,519 VALID
21 0,628
VALID
Source: Data Primary From Calculation, 2016
2. Test Reliability Questionnaire
The instrument is reliable if such instrument when the result are the same althought its used in different time. Arikunto, 2013: 101. The reliability test
used Cronbach alpha formula.
35 The Cronbach alpha formula is as follows:
r
11
=
� �−
−
∑ � �
Description: r
11 :
instrument reability k
: the number of questions ∑ � � : the number of variance items
�� : total variances
Source: Arikunto, 2010: 239 The correlation coefficient use categories according Sugiyono 2015: 257
follows:
Table 11. Guidlines for Providing Interpretation with Correlation Coeffisient No
Interval Coeficient Interpretation
1. Between 0,00
– 0,199 Very Low
2. Between 0,20
– 0,399 Low
3. Between 0,40
– 0,599 Enough
4. Between 0,60
– 0,799 Strong
5. Between 0,80
– 0,1000 Very Strong
Source: Sugiyono 2015: 257 From the table above, the instrument is reliable if it has a Cronbach Alpha
coefficients more than 0.600. If the coefficient Cronbach Alpha is less than 0,600 the instrument is not reliable. Reliability tests performed used statistic program.
The table below is a reliability test results of research instruments.
Table 12. Results of reliability test instrument No.
Variables Cronbach
Alpha Explanation
1. Accounting Teacher Interest
0,846 Very Strong
2. Student Perceptions
0,886 Very Strong
3. Family Environment
0,845 Very Strong
Source: Data Primary From Calculation, 2016
I. Data Analysis Techniques
1. Data Description
The data obtained will be presented in the form of data description for each variable. The analysis data description includes the results of the mean,
36 median, mode, standard deviation, maximum value, minimum value, the
frequency distribution table, histograms, tables of tendency variables and pie charts.
a. Mean, Median, Mode, Standard Deviation, Maximum Value, Minimum
Value. Mean is the average of the group. Mean is calculated from the sum
of all values divided by the number of data. The median is a central value data. The mode is the value of the data most frequently occurring. Standard
deviation is a measure of the spread of data. The maximum value is obtained from the biggest score data and the minimum value is the smallest
score data. b.
Tables of Frequency Distribution 1
Determine the number of Class Intervals For the calculated class intervals used Sturges Rule formula, follows:
k = 1 + 3,3 log n Description:
k = Total of data class n = Total of observation data
log = Logarithm
Sugiyono, 2012: 35 2
Determine a range For the calcutating a range of clas, used the formula:
Range = maximum score – minimum score + 1
3 Determine a long class
To determine a long class used the formula, such as follow:
37 class length =
range total of interval class
4 Histogram
Histograms are made from the frequency of data has been seen in the tables of frequency distribution. This histograms used to easier of
described and read of the data. 5
Variables Tendency Tables The tendency score there are made to be four categories which
modified from Mardapi 2008:123, can be seen in the table such as follows:
Table 13. The Categories of Tendency Variables
No. Formula Categories
1. X ≥ Mi + 1,5 SDi
Vary High 2.
Mi ≤ X Mi + 1,5 SDi High
3. Mi
– 1,5 SDi ≤ X Mi Low
4. X Mi
– 1 ,5 SDi Very Low
Source: Modified from Djemari Mardapi 2008: 123 Description:
Mi = Average from score the total students in class
= ½ X max + X min SDi
= Standar deviation total score = 16 X max
– X min 6
Pie Chart Pie chart is made depending on tendency data that have showed on
variable tendency table.
2. Prerequisite Test Analysis
Kategori