/AT_BANNER([T-TEST])

AT_SETUP([T-TEST /PAIRS])
AT_DATA([t-test.sps], [dnl
data list list /ID * A * B *.
begin data.
1 2.0 3.0
2 1.0 2.0
3 2.0 4.5
4 2.0 4.5
5 3.0 6.0
end data.

t-test /PAIRS a with b (PAIRED).
])
AT_CHECK([pspp -o pspp.csv t-test.sps])
AT_CHECK([cat pspp.csv], [0], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
ID,F8.0
A,F8.0
B,F8.0

Table: Paired Sample Statistics
,,Mean,N,Std. Deviation,S.E. Mean
Pair 0,A,2.00,5,.71,.32
,B,4.00,5,1.54,.69

Table: Paired Samples Correlations
,,N,Correlation,Sig.
Pair 0,A & B,5,.92,.03

Table: Paired Samples Test
,,Paired Differences,,,,,,,
,,,,,95% Confidence Interval of the Difference,,,,
,,Mean,Std. Deviation,Std. Error Mean,Lower,Upper,t,df,Sig. (2-tailed)
Pair 0,A - B,-2.00,.94,.42,-3.16,-.84,-4.78,4,.01
])
AT_CLEANUP

AT_SETUP([T-TEST /PAIRS with per-analysis missing values])
AT_DATA([ref.sps], [dnl
data list list /id * a * b * c * d *.
begin data.
1 2.0 3.0 4.0 4.0
2 1.0 2.0 5.1 3.9
3 2.0 4.5 5.2 3.8
4 2.0 4.5 5.3 3.7
56 3.0 6.0 5.9 3.6
end data.

t-test /PAIRS a c with b d (PAIRED). 
])
AT_DATA([expout], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
id,F8.0
a,F8.0
b,F8.0
c,F8.0
d,F8.0

Table: Paired Sample Statistics
,,Mean,N,Std. Deviation,S.E. Mean
Pair 0,a,2.00,5,.71,.32
,b,4.00,5,1.54,.69
Pair 1,c,5.10,5,.69,.31
,d,3.80,5,.16,.07

Table: Paired Samples Correlations
,,N,Correlation,Sig.
Pair 0,a & b,5,.92,.03
Pair 1,c & d,5,-.92,.03

Table: Paired Samples Test
,,Paired Differences,,,,,,,
,,,,,95% Confidence Interval of the Difference,,,,
,,Mean,Std. Deviation,Std. Error Mean,Lower,Upper,t,df,Sig. (2-tailed)
Pair 0,a - b,-2.00,.94,.42,-3.16,-.84,-4.78,4,.01
Pair 1,c - d,1.30,.84,.37,.26,2.34,3.47,4,.03
])
AT_CHECK([pspp -o ref.csv ref.sps])
AT_CHECK([cat ref.csv], [0], [expout])
AT_DATA([missing.sps], [dnl
data list list /id * a * b * c * d *.
begin data.
1 2.0 3.0 4.0 4.0 
2 1.0 2.0 5.1 3.9
3 2.0 4.5 5.2 3.8
4 2.0 4.5 5.3 3.7
5 3.0 6.0 5.9 .
6 3.0  .  5.9 3.6
end data.


t-test /MISSING=analysis /PAIRS a c with b d (PAIRED) /CRITERIA=CIN(0.95). 
])
AT_CHECK([pspp -o missing.csv missing.sps])
AT_CHECK([cat missing.csv], [0], [expout])
AT_CLEANUP

AT_SETUP([T-TEST /PAIRS with listwise missing values])
AT_DATA([ref.sps], [dnl
data list list /id * a * b * c * d *.
begin data.
1 2.0 3.0 4.0 4.0
2 1.0 2.0 5.1 3.9
3 2.0 4.5 5.2 3.8
4 2.0 4.5 5.3 3.7
5 3.0 6.0 5.9 3.6
end data.

t-test /PAIRS a b with c d (PAIRED). 
])
AT_DATA([expout], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
id,F8.0
a,F8.0
b,F8.0
c,F8.0
d,F8.0

Table: Paired Sample Statistics
,,Mean,N,Std. Deviation,S.E. Mean
Pair 0,a,2.00,5,.71,.32
,c,5.10,5,.69,.31
Pair 1,b,4.00,5,1.54,.69
,d,3.80,5,.16,.07

Table: Paired Samples Correlations
,,N,Correlation,Sig.
Pair 0,a & c,5,.41,.49
Pair 1,b & d,5,-.87,.05

Table: Paired Samples Test
,,Paired Differences,,,,,,,
,,,,,95% Confidence Interval of the Difference,,,,
,,Mean,Std. Deviation,Std. Error Mean,Lower,Upper,t,df,Sig. (2-tailed)
Pair 0,a - c,-3.10,.76,.34,-4.04,-2.16,-9.14,4,.00
Pair 1,b - d,.20,1.68,.75,-1.89,2.29,.27,4,.80
])
AT_CHECK([pspp -o ref.csv ref.sps])
AT_CHECK([cat ref.csv], [0], [expout])
AT_DATA([missing.sps], [dnl
data list list /id * a * b * c * d *.
begin data.
1 2.0 3.0 4.0 4.0 
2 1.0 2.0 5.1 3.9
3 2.0 4.5 5.2 3.8
4 2.0 4.5 5.3 3.7
5 3.0 6.0 5.9 3.6
6 3.0 6.0 5.9  .
end data.


t-test /MISSING=listwise /PAIRS a b with c d (PAIRED). 
])
AT_CHECK([pspp -o missing.csv missing.sps])
AT_CHECK([cat missing.csv], [0], [expout])
AT_CLEANUP

dnl Tests for a bug in the paired samples T test.
dnl Thanks to Mike Griffiths for reporting this problem.
AT_SETUP([T-TEST /PAIRS bug])
AT_DATA([t-test.sps], [dnl
set format f8.3.
data list list /A * B *.
begin data.
11 2
1  1
1  1
end data.

t-test pairs = a with b (paired).
])
AT_CHECK([pspp -o pspp.csv t-test.sps])
AT_CHECK([cat pspp.csv], [0], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
A,F8.0
B,F8.0

Table: Paired Sample Statistics
,,Mean,N,Std. Deviation,S.E. Mean
Pair 0,A,4.333,3,5.774,3.333
,B,1.333,3,.577,.333

Table: Paired Samples Correlations
,,N,Correlation,Sig.
Pair 0,A & B,3,1.000,.000

Table: Paired Samples Test
,,Paired Differences,,,,,,,
,,,,,95% Confidence Interval of the Difference,,,,
,,Mean,Std. Deviation,Std. Error Mean,Lower,Upper,t,df,Sig. (2-tailed)
Pair 0,A - B,3.000,5.196,3.000,-9.908,15.908,1.000,2,.423
])
AT_CLEANUP

AT_SETUP([T-TEST /GROUPS])
AT_DATA([t-test.sps], [dnl
data list list /ID * INDEP * DEP1 * DEP2 *.
begin data.
1  1.1 1 3
2  1.1 2 4
3  1.1 2 4 
4  1.1 2 4 
5  1.1 3 5
6  2.1 3 1
7  2.1 4 2
8  2.1 4 2
9  2.1 4 2
10 2.1 5 3
11 3.1 2 2
end data.

* Note that the last case should be IGNORED since it doesn't have a
  dependent variable of either 1.1 or 2.1.

t-test /GROUPS=indep(1.1,2.1) /var=dep1 dep2.
])
AT_CHECK([pspp -o pspp.csv t-test.sps])
AT_CHECK([cat pspp.csv], [0], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
ID,F8.0
INDEP,F8.0
DEP1,F8.0
DEP2,F8.0

Table: Group Statistics
,INDEP,N,Mean,Std. Deviation,S.E. Mean
DEP1,1.10,5,2.00,.71,.32
,2.10,5,4.00,.71,.32
DEP2,1.10,5,4.00,.71,.32
,2.10,5,2.00,.71,.32

Table: Independent Samples Test
,,Levene's Test for Equality of Variances,,t-test for Equality of Means,,,,,,
,,,,,,,,,95% Confidence Interval of the Difference,
,,F,Sig.,t,df,Sig. (2-tailed),Mean Difference,Std. Error Difference,Lower,Upper
DEP1,Equal variances assumed,.00,1.00,-4.47,8.00,.00,-2.00,.45,-3.03,-.97
,Equal variances not assumed,,,-4.47,8.00,.00,-2.00,.45,-3.03,-.97
DEP2,Equal variances assumed,.00,1.00,4.47,8.00,.00,2.00,.45,.97,3.03
,Equal variances not assumed,,,4.47,8.00,.00,2.00,.45,.97,3.03
])
AT_CLEANUP

AT_SETUP([T-TEST /GROUPS with one value for independent variable])
AT_DATA([t-test.sps], [dnl
data list list /INDEP * DEP *.
begin data.
       1        6
       1        6
       1        7
       1        6
       1       13
       1        4
       1        7
       1        9
       1        7
       1       12
       1       11
       2       11
       2        9
       2        8
       2        4
       2       16
       2        9
       2        9
       2        5
       2        4
       2       10
       2       14
end data.
t-test /groups=indep(1.514) /var=dep.
])
AT_CHECK([pspp -o pspp.csv t-test.sps])
AT_CHECK([cat pspp.csv], [0], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
INDEP,F8.0
DEP,F8.0

Table: Group Statistics
,INDEP,N,Mean,Std. Deviation,S.E. Mean
DEP,≥    1.51,11,9.00,3.82,1.15
,<    1.51,11,8.00,2.86,.86

Table: Independent Samples Test
,,Levene's Test for Equality of Variances,,t-test for Equality of Means,,,,,,
,,,,,,,,,95% Confidence Interval of the Difference,
,,F,Sig.,t,df,Sig. (2-tailed),Mean Difference,Std. Error Difference,Lower,Upper
DEP,Equal variances assumed,.17,.68,.69,20.00,.50,1.00,1.44,-2.00,4.00
,Equal variances not assumed,,,.69,18.54,.50,1.00,1.44,-2.02,4.02
])
AT_CLEANUP

AT_SETUP([T-TEST /GROUPS with per-analysis missing values])
AT_DATA([ref.sps], [dnl
data list list /id * indep * dep1 * dep2 *.
begin data.
1  1.0 3.5 6
2  1.0 2.0 5
3  1.0 2.0 4
4  2.0 3.5 3
56 2.0 3.0 1
end data.

t-test /group=indep /var=dep1, dep2.
])
AT_DATA([expout], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
id,F8.0
indep,F8.0
dep1,F8.0
dep2,F8.0

Table: Group Statistics
,indep,N,Mean,Std. Deviation,S.E. Mean
dep1,1.00,3,2.50,.87,.50
,2.00,2,3.25,.35,.25
dep2,1.00,3,5.00,1.00,.58
,2.00,2,2.00,1.41,1.00

Table: Independent Samples Test
,,Levene's Test for Equality of Variances,,t-test for Equality of Means,,,,,,
,,,,,,,,,95% Confidence Interval of the Difference,
,,F,Sig.,t,df,Sig. (2-tailed),Mean Difference,Std. Error Difference,Lower,Upper
dep1,Equal variances assumed,3.75,.15,-1.12,3.00,.35,-.75,.56,-2.53,1.03
,Equal variances not assumed,,,-1.34,2.78,.28,-.75,.56,-2.61,1.11
dep2,Equal variances assumed,.60,.50,2.85,3.00,.07,3.00,1.15,-.67,6.67
,Equal variances not assumed,,,2.60,1.68,.14,3.00,1.15,-2.98,8.98
])
AT_CHECK([pspp -o ref.csv ref.sps])
AT_CHECK([cat ref.csv], [0], [expout])
AT_DATA([missing.sps], [dnl
data list list /id * indep * dep1 * dep2.
begin data.
1 1.0 3.5 6
2 1.0 2.0 5
3 1.0 2.0 4
4 2.0 3.5 3
5 2.0 3.0 .
6 2.0 .   1
7  .  3.1 5
end data.

* Note that if the independent variable is missing, then it's implicitly 
* listwise missing.

t-test /missing=analysis /group=indep /var=dep1 dep2.
])
AT_CHECK([pspp -o missing.csv missing.sps])
AT_CHECK([cat missing.csv], [0], [expout])
AT_CLEANUP

AT_SETUP([T-TEST /GROUPS with listwise missing values])
AT_DATA([ref.sps], [dnl
data list list /id * indep * dep1 * dep2.
begin data.
1 1.0 3.5 6
2 1.0 2.0 5
3 1.0 2.0 4
4 2.0 3.5 3
5 2.0 3.0 2
6 2.0 4.0 1
end data.

t-test /group=indep /var=dep1 dep2.
])
AT_DATA([expout], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
id,F8.0
indep,F8.0
dep1,F8.0
dep2,F8.0

Table: Group Statistics
,indep,N,Mean,Std. Deviation,S.E. Mean
dep1,1.00,3,2.50,.87,.50
,2.00,3,3.50,.50,.29
dep2,1.00,3,5.00,1.00,.58
,2.00,3,2.00,1.00,.58

Table: Independent Samples Test
,,Levene's Test for Equality of Variances,,t-test for Equality of Means,,,,,,
,,,,,,,,,95% Confidence Interval of the Difference,
,,F,Sig.,t,df,Sig. (2-tailed),Mean Difference,Std. Error Difference,Lower,Upper
dep1,Equal variances assumed,2.00,.23,-1.73,4.00,.16,-1.00,.58,-2.60,.60
,Equal variances not assumed,,,-1.73,3.20,.18,-1.00,.58,-2.77,.77
dep2,Equal variances assumed,.00,1.00,3.67,4.00,.02,3.00,.82,.73,5.27
,Equal variances not assumed,,,3.67,4.00,.02,3.00,.82,.73,5.27
])
AT_CHECK([pspp -o ref.csv ref.sps])
AT_CHECK([cat ref.csv], [0], [expout])
AT_DATA([missing.sps], [dnl
data list list /id * indep * dep1 * dep2 *.
begin data.
1 1.0 3.5 6
2 1.0 2.0 5
3 1.0 2.0 4
4 2.0 3.5 3
5 2.0 3.0 2
6 2.0 4.0 1
7 2.0 .   0
end data.

t-test /missing=listwise,exclude /group=indep /var=dep1, dep2.
])
AT_CHECK([pspp -o missing.csv missing.sps])
AT_CHECK([cat missing.csv], [0], [expout])
AT_CLEANUP

AT_SETUP([T-TEST /TESTVAL])
AT_DATA([t-test.sps], [dnl
data list list /ID * ABC *.
begin data.
1 3.5
2 2.0
3 2.0
4 3.5
5 3.0
6 4.0
end data.

t-test /testval=2.0 /var=abc.
])
AT_CHECK([pspp -o pspp.csv t-test.sps])
AT_CHECK([cat pspp.csv], [0], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
ID,F8.0
ABC,F8.0

Table: One-Sample Statistics
,N,Mean,Std. Deviation,S.E. Mean
ABC,6,3.00,.84,.34

Table: One-Sample Test
,Test Value = 2.000000,,,,,
,,,,,95% Confidence Interval of the Difference,
,t,df,Sig. (2-tailed),Mean Difference,Lower,Upper
ABC,2.93,5,.03,1.00,.12,1.88
])
AT_CLEANUP

AT_SETUP([T-TEST /TESTVAL with per-analysis missing values])
AT_DATA([ref.sps], [dnl
data list list /id * x1 * x2.
begin data.
1 3.5 34
2 2.0 10
3 2.0 23
4 3.5 98
5 3.0 23
67 4.0 8
end data.

t-test /testval=3.0 /var=x1 x2.
])
AT_DATA([expout], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
id,F8.0
x1,F8.0
x2,F8.0

Table: One-Sample Statistics
,N,Mean,Std. Deviation,S.E. Mean
x1,6,3.00,.84,.34
x2,6,32.67,33.40,13.64

Table: One-Sample Test
,Test Value = 3.000000,,,,,
,,,,,95% Confidence Interval of the Difference,
,t,df,Sig. (2-tailed),Mean Difference,Lower,Upper
x1,.00,5,1.00,.00,-.88,.88
x2,2.18,5,.08,29.67,-5.39,64.72
])
AT_CHECK([pspp -o ref.csv ref.sps])
AT_CHECK([cat ref.csv], [0], [expout])
AT_DATA([missing.sps], [dnl
data list list /id * x1 * x2.
begin data.
1 3.5 34
2 2.0 10
3 2.0 23
4 3.5 98
5 3.0 23
6 4.0 .
7  .  8
end data.

t-test /missing=analysis /testval=3.0 /var=x1 x2.
])
AT_CHECK([pspp -o missing.csv missing.sps])
AT_CHECK([cat missing.csv], [0], [expout])
AT_CLEANUP

AT_SETUP([T-TEST /TESTVAL with listwise missing values])
AT_DATA([ref.sps], [dnl
data list list /id * x1 * x2.
begin data.
1 3.5 34
2 2.0 10
3 2.0 23
4 3.5 98
5 3.0 23
end data.

t-test /testval=3.0 /var=x1 x2.
])
AT_DATA([expout], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
id,F8.0
x1,F8.0
x2,F8.0

Table: One-Sample Statistics
,N,Mean,Std. Deviation,S.E. Mean
x1,5,2.80,.76,.34
x2,5,37.60,34.82,15.57

Table: One-Sample Test
,Test Value = 3.000000,,,,,
,,,,,95% Confidence Interval of the Difference,
,t,df,Sig. (2-tailed),Mean Difference,Lower,Upper
x1,-.59,4,.59,-.20,-1.14,.74
x2,2.22,4,.09,34.60,-8.63,77.83
])
AT_CHECK([pspp -o ref.csv ref.sps])
AT_CHECK([cat ref.csv], [0], [expout])
AT_DATA([missing.sps], [dnl
data list list /id * x1 * x2.
begin data.
1 3.5 34
2 2.0 10
3 2.0 23
4 3.5 98
5 3.0 23
6 4.0 99
end data.

MISSING VALUES x2(99).

t-test /missing=listwise /testval=3.0 /var=x1 x2.
])
AT_CHECK([pspp -o missing.csv missing.sps])
AT_CHECK([cat missing.csv], [0], [expout])
AT_CLEANUP

AT_SETUP([T-TEST wih TEMPORARY transformation])
AT_DATA([ref.sps], [dnl
data list list /ind * x * .
begin data.
1 3.5
1 2.0
1 2.0
2 3.5
2 3.0
2 4.0
end data.

t-test /groups=ind(1,2) /var x.
])
AT_DATA([expout], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
ind,F8.0
x,F8.0

Table: Group Statistics
,ind,N,Mean,Std. Deviation,S.E. Mean
x,1.00,3,2.50,.87,.50
,2.00,3,3.50,.50,.29

Table: Independent Samples Test
,,Levene's Test for Equality of Variances,,t-test for Equality of Means,,,,,,
,,,,,,,,,95% Confidence Interval of the Difference,
,,F,Sig.,t,df,Sig. (2-tailed),Mean Difference,Std. Error Difference,Lower,Upper
x,Equal variances assumed,2.00,.23,-1.73,4.00,.16,-1.00,.58,-2.60,.60
,Equal variances not assumed,,,-1.73,3.20,.18,-1.00,.58,-2.77,.77
])
AT_CHECK([pspp -o ref.csv ref.sps])
AT_CHECK([cat ref.csv], [0], [expout])
AT_DATA([temporary.sps], [dnl
data list list /ind * x * .
begin data.
1 3.5
1 2.0
1 2.0
2 3.5
2 3.0
2 4.0
2 9.0
end data.

TEMPORARY.
SELECT IF x < 7.

t-test /groups=ind(1,2) /var x.
])
AT_CHECK([pspp -o temporary.csv temporary.sps])
AT_CHECK([cat temporary.csv], [0], [expout])
AT_CLEANUP

dnl Tests for a bug which caused T-TEST to crash when given invalid syntax.
AT_SETUP([T-TEST invalid syntax])
AT_DATA([t-test.sps], [dnl
DATA LIST LIST NOTABLE /id * a * .
BEGIN DATA.
1 3.5
2 2.0
3 2.0
4 3.5
5 3.0
6 4.0
END DATA.

T-TEST /testval=2.0 .
T-TEST /groups=id(3) .
])
AT_CHECK([pspp -O format=csv t-test.sps], [1], [dnl
t-test.sps:11: error: T-TEST: Required subcommand VARIABLES was not specified.

t-test.sps:12: error: T-TEST: Required subcommand VARIABLES was not specified.
])
AT_CLEANUP

dnl Tests for bug #11227, exhibited when the independent variable is a string.
AT_SETUP([T-TEST string variable])
AT_DATA([t-test.sps], [dnl
data list list /ID * INDEP (a1) DEP1 * DEP2 *.
begin data.
1  'a' 1 3
2  'a' 2 4
3  'a' 2 4 
4  'a' 2 4 
5  'a' 3 5
6  'b' 3 1
7  'b' 4 2
8  'b' 4 2
9  'b' 4 2
10 'b' 5 3
11 'c' 2 2
end data.


t-test /GROUPS=indep('a','b') /var=dep1 dep2.
])
AT_CHECK([pspp -o pspp.csv t-test.sps])
AT_CHECK([cat pspp.csv], [0], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
ID,F8.0
INDEP,A1
DEP1,F8.0
DEP2,F8.0

Table: Group Statistics
,INDEP,N,Mean,Std. Deviation,S.E. Mean
DEP1,a,5,2.00,.71,.32
,b,5,4.00,.71,.32
DEP2,a,5,4.00,.71,.32
,b,5,2.00,.71,.32

Table: Independent Samples Test
,,Levene's Test for Equality of Variances,,t-test for Equality of Means,,,,,,
,,,,,,,,,95% Confidence Interval of the Difference,
,,F,Sig.,t,df,Sig. (2-tailed),Mean Difference,Std. Error Difference,Lower,Upper
DEP1,Equal variances assumed,.00,1.00,-4.47,8.00,.00,-2.00,.45,-3.03,-.97
,Equal variances not assumed,,,-4.47,8.00,.00,-2.00,.45,-3.03,-.97
DEP2,Equal variances assumed,.00,1.00,4.47,8.00,.00,2.00,.45,.97,3.03
,Equal variances not assumed,,,4.47,8.00,.00,2.00,.45,.97,3.03
])
AT_CLEANUP

AT_SETUP([T-TEST string variable, only one value])
AT_DATA([t-test.sps], [dnl
data list list notable /id * indep (a1) dep1 * dep2 *.
begin data.
1  'a' 1 3
2  'a' 2 4
3  'a' 2 4 
4  'a' 2 4 
5  'a' 3 5
6  'b' 3 1
7  'b' 4 2
8  'b' 4 2
9  'b' 4 2
10 'b' 5 3
11 'c' 2 2
end data.


t-test /GROUPS=indep('a') /var=dep1 dep2.
])
AT_CHECK([pspp -O format=csv t-test.sps], [1], [dnl
"t-test.sps:17: error: T-TEST: When applying GROUPS to a string variable, two values must be specified."
])
AT_CLEANUP

dnl Tests for a bug which didn't properly compare string values.
AT_SETUP([T-TEST string variable comparison bug])
AT_DATA([t-test.sps], [dnl
data list list /x * gv (a8).
begin data.
3   One
2   One
3   One
2   One
3   One
4   Two
3.5 Two
3.0 Two
end data.

t-test group=gv('One', 'Two')
	/variables = x.
])
AT_CHECK([pspp -o pspp.csv t-test.sps])
AT_CHECK([cat pspp.csv], [0], [dnl
Table: Reading free-form data from INLINE.
Variable,Format
x,F8.0
gv,A8

Table: Group Statistics
,gv,N,Mean,Std. Deviation,S.E. Mean
x,One     ,5,2.60,.55,.24
,Two     ,3,3.50,.50,.29

Table: Independent Samples Test
,,Levene's Test for Equality of Variances,,t-test for Equality of Means,,,,,,
,,,,,,,,,95% Confidence Interval of the Difference,
,,F,Sig.,t,df,Sig. (2-tailed),Mean Difference,Std. Error Difference,Lower,Upper
x,Equal variances assumed,1.13,.33,-2.32,6.00,.06,-.90,.38,-1.83,.03
,Equal variances not assumed,,,-2.38,4.70,.07,-.90,.38,-1.89,.09
])
AT_CLEANUP



dnl Tests for a bug assert failed when the group variables were not of either class
AT_SETUP([T-TEST wrong group])
AT_DATA([t-test-crs.sps], [dnl
data list list /x * g *.
begin data.
1 2
2 2
3 2
4 2
5 2 
end data.

t-test /variables = x group=g(1,3).
])

AT_CHECK([pspp t-test-crs.sps], [0],[ignore], [ignore])

AT_CLEANUP
