StatPowers
Sampling Distribution (Sum)
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Distribution Parameters:
Mean (μ or x̄)
Sample Standard Deviation (s)
Population Standard Deviation (σ)
Sample Size
Use Normal Distribution
Choose Calculator Type
Probability
Percentiles
Area / Probability
Results:
μ
X̄
=
σ
X̄
=
Above:
Below:
Middle:
Tails:
Recalculate
Above
Below
Between
Tails
P(X ≥
)
P(X ≤
)
P(
≤ X ≤
)
P(X ≤
or X ≥
)
Results:
μ
ΣX
=
σ
ΣX
=
Probability:
Recalculate