1. Yields of Entozoic Amoebae Under 5 Methods of Innoculation
Case Study 1-Way ANOVA
Yields of Entozoic Amoebae Under 5 Methods of Innoculation
Griffin&McCarten(1949). The Journal of Parasitology. Vol.35,#2,pp

2. Description 5 Methods of Innoculation (Conditions)
None (Control)
Heat at 70C for 10 minutes
Addition of 10% Formalin
Heat followed by Formalin
Formalin, followed after 1 hour by heat
n=10 Replicates per Condition (N=50)
Y=Yield (10-4)

3. Data

5. Group Means/SD’s and Sums of Squares

6. Analysis of Variance and F-test
H0: m1 = m2 = m3 = m4 = m5 (No differences in condition effects)
HA: Not all mi are equal (Differences Among Condition Effects)

7. Diagnostics - Tests of Equal Variances
Levene’s Test

8. Diagnostics - Normality Assumption
Histogram:
Approximately bell-shaped
Normal Probability Plot:
Approximates a straight line

9. Kruskal-Wallis Test

10. Post-Hoc Comparisons (I)

11. Post-Hoc Comparisons (II)
Fisher’s LSD: m1 > m2 , m1 > m3 , m1 > m4 , m1 > m5
Tukey, Bonferroni: m1 > m2 , m1 > m3 , m1 > m5