Statistics Formulas Lecture Notes Study Reference Sheet Probability and Data Analysis Complete Review Guide 2025/ 2026

Statistics Formulas – Lecture Notes _ Study
Statistics
Reference
Formulas
Sheet.pdf
– Lecture Notes _ Study
Statistics
Reference
Formulas
Sheet.pdf
– Lecture Notes _ Study Reference Sheet.pdf




Statistics Formulas
– Lecture Notes /
Study Reference
Sheet




Statistics Formulas – Lecture Notes _ Study
Statistics
Reference
Formulas
Sheet.pdf
– Lecture Notes _ Study
Statistics
Reference
Formulas
Sheet.pdf
– Lecture Notes _ Study Reference Sheet.pdf

, Statistics Formulas.pdf Statistics Formulas.pdf Statistics Formulas.pdf




Population mean μ = ( Σ Xi ) / N


Population standard deviation = σ = sqrt [ Σ ( Xi - μ )² / N ]


Population variance σ² = Σ ( Xi - μ )² / N


Standardized score Z = (X - μ) / σ


Population correlation coefficient ρ = [ 1 / N ] * Σ { [ (Xi - μX) / σx ] * [ (Yi - μY) / σy ] }


Sample mean x = ( Σ xi ) / n


Sample standard deviation s = sqrt [ Σ ( xi - x )² / ( n - 1 ) ]


Sample variance s² = Σ ( xi - x )² / ( n - 1 )


Pooled sample proportion p = (p1 * n1 + p2 * n2) / (n1 + n2)


Variance of sample proportion = sp² = pq / (n - 1)


Statistics Formulas.pdf Statistics Formulas.pdf Statistics Formulas.pdf