A research study comparing three treatments with n = 5 in each treatment produces T₁ = 5,T₂ = 10,T₃ = 15,with SS₁ = 6,SS₂ = 9,SS₃ = 9,and ΣX² = 94.For this study,what is SSₜₒₜₐₗ?
A)10
B)24
C)34
D)68

Question

Quizplus · Accepted Answer

SSₜₒₜₐₗ can be calculated using the formula 
SSₜₒₜₐₗ = ΣX² - (ΣX)²/N 
where N is the total sample size
ΣX = T₁ + T₂ + T₃ = 5 + 10 + 15 = 30
N = 5 + 5 + 5 = 15
SSₜₒₜₐₗ = 94 - (30)²/15
SSₜₒₜₐₗ = 34

A Research Study Comparing Three Treatments with N = 5