Robust Tests of Equality of Means ZI**

Org

Test

Statistic

df1

df2

Sig.

B2

Welch

26.7

2

1.90

0.04

B3

Welch

21.00

2

2

0.04

Multiple Comparisons (Games-Howell Post Hoc)**

Org

(I) Conc

(J) Conc

Mean Difference (I-J)

Std. Error

Sig.

95% Confidence Interval

Lower Bound

Upper Bound

B2

25% v/v

50% v/v

−3.50

1.12

0.21

−13.345

6.35

100% v/v

−6.00

0.71

0.02

−10.17

−1.83

50% v/v

25% v/v

3.50

1.12

0.21

−6.34

13.35

100% v/v

−2.50

1.12

0.31

−12.35

7.35

100% v/v

25% v/v

6.00

0.71

0.02

1.83

10.17

50% v/v

2.50

1.12

0.31

−7.35

12.34

B3

25% v/v

50% v/v

−8.00

1.41

0.05

−16.33

0.33

100% v/v

−10.00

1.41

0.03

−18.33

−1.67

50% v/v

25% v/v

8.00

1.41

0.05

−0.33

16.33

100% v/v

−2.00

1.41

0.47

−10.33

6.33

100% v/v

25% v/v

10.00

1.41

0.03

1.67

18.33

50% v/v

2.00

1.41

0.47

−6.33

10.33