JESUS CHRIST is the same yesterday, and today, and forever. - Hebrews 13:8

The Joy of a Teacher is the Success of his Students. - Samuel Chukwuemeka

Inferential Statistics Calculators

Samdom For Peace

I greet you this day,

You may use these calculators to check your answers. You are encouraged to solve the questions first, and check your answers. These topics are covered in my Videos and Notes on Inferential Statistics.

I wrote the codes for these calculators using Javascript, a client-side scripting language. Please use the latest Internet browsers. The calculators should work. Comments, ideas, areas of improvement, questions, and constructive criticisms are welcome. Should you need to contact me, please use the form at the bottom of the page. Thank you for visiting!!!

Samuel Dominic Chukwuemeka (Samdom For Peace) B.Eng., A.A.T, M.Ed., M.S





Critical Values

Given: CL

To Find: α, zα/2

Requirements: population is normally distributed or n > 30 and σ is given

in

Given: α

To Find: CL, zα/2

Requirements: population is normally distributed or n > 30 and σ is given

in




Given: CL, df

To Find: α, critical t

Requirements: population is normally distributed or n > 30 and s is given

in

Given: α, df

To Find: CL, critical t

Requirements: population is normally distributed or n > 30 and s is given

in




Given: CL, n

To Find: α, critical t

Requirements: population is normally distributed or n > 30 and s is given

in

Given: α, n

To Find: CL, critical t

Requirements: population is normally distributed or n > 30 and s is given

in




Given: CL, df

To Find: α, critical Χ2

Requirement: population is normally distributed

in

Given: α, df

To Find: CL, critical Χ2

Requirement: population is normally distributed

in




Estimating Population Proportion

Given: CI

To Find: p̂, E

Given: CI, n

To Find: p̂, E, x




Given: p̂, n, CL

To Find: q̂, E, CI

Requirements: np̂ ≥ 5, nq̂ ≥ 5, np̂q̂ ≥ 10

in

in

Given: CL, x, n

To Find: p̂, q̂, E, CI

Requirements: np̂ ≥ 5, nq̂ ≥ 5, np̂q̂ ≥ 10

in




Given: CL, p̂, E

To Find: q̂, n

in

in

in

Given: CL, E

To Find: n

in

in




Given: zα/2, p̂, E

To Find: q̂, n

in

in

Given: zα/2, E

To Find: n

in




Given: p̂, E, CL (Use 95% if not given)

To Find: CI

in




Estimating Population Mean

Given: CI

To Find: x̄, E

Given: x̄, E, CL (Use 95% if not given)

To Find: CI

in




Given: CL, σ, n, x̄

To Find: E, CI

When requirements are met: population is normally distributed or n > 30

in

Given: CL, s, n, x̄

To Find: E, CI

When requirements are met: population is normally distributed or n > 30

in




Given: σ, CL, E

To Find: n

in

in

Given: s, CL, df, E

To Find: n

in

in




Given: min, max, α, E, sample size

To Find: R, s, df, n

in

in

Given: min, max, CL, E

To Find: R, σ, n

in

in




Given: Raw Dataset (from Sample)

To Find: x̄, s




Estimating Population Variance and Population Standard Deviation

Given: CL, n, s

To Find: df, Χ2L, Χ2R, CI

in




Expected Counts

Given: i, pi, n

To Find: Ei