Question

statistics formulas please​

Answer 1

Answer:

Statistics Formulas

Population mean = μ = ( Σ Xi ) / N.

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

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

Variance of population proportion = σP2 = PQ / n.

Standardized score = Z = (X - μ) / σ

Answer 2

Answer:

your answer in attachment