Convenient, Accurate, Easy to Read electronic Probability Distribution Tables.

Version 3.8 changes:

Update to Android 13 (API Level 33)

Version 3.7 changes:

Up to date Build of APP. March 27 of 2023

Version 3.7 changes:

Up to date Build of APP. August of 2020

Version 3.2 changes:

Up to date Build of APP. July of 2019.

Version 3.1 changes:

Now you can choose to show or omit background graphs on the Probability Table text views. Choose how you want it on the About Screen. Also, you can now copy the Probability Table text results from the answer in the Probability Table text views.

Version 3.0 includes:

Hypothesis Test Mean (Sigma Known, Sigma

Unknown, Proportion).

Inference Test Formulas for 2 Populations -

Means and Proportions.

Version 2.9

Add Permutations and Combinations.

Add Sample Size Calculation.

Convenient, Accurate, Easy to Read

electronic Probability Distribution Tables.

Normal, Binomial, Poisson, T and F

Distributions. Also, invNorm and

invT calculations.

Contains calculators for Confidence

Intervals (Sigma Known, Sigma Unknown,

Proportion).

Contains calculators for Permutations

and Combinations, and Sample Size.

Updated to include:

Hypothesis Test Mean (Sigma Known, Sigma

Unknown, Proportion).

Inference Test Formulas for 2 Populations -

Means and Proportions.

Great for Intro Probability Statistics

courses, or if you just need these tables!

For both Phone and 10' tablets.

These tables give you the probabilities

associated with your test statistics and

parameters.

To use these tables, just select the

distribution you want, and put in the

test statistic and parameters, and the

APP tells you the related probability.

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1) For the Normal Distribution:

Enter your Z Score, and you get

the left, right tails and the range.

2) For the Binomial Distribution:

Enter n - number of trials,

p - probability of success,

x - number of successes

and you get the probability of

x, or the cumulative probability

for x.

3) For the Poisson Distribution:

Enter the mean, and number of

occurences, and you will get

the Probability of the number

of occurences, and the cumulative

probability.

4) For the t Distribution:

Enter t and the Degrees of Freedom

and you will get the probability

of the left and right tails, and

the two tailed probability.

5) For the f Distribution:

Enter the f statistic, and the

Degrees of Freedom for the numerator

and denominator. You will get the

probability for the right tail

(alpha for the ANOVA test).

6) For the Chi-Square Distribution:

Enter Chi-Square and the Degrees of Freedom

and you will get the probability

of the right tail.

7) Inverse Normal.

Enter the probability of the

Normal Distribution left tail,

and you get the Z statistic.

8) Inverse t

Enter the probability of the

t distribution left tail, along with

the degrees of freedom, and you will

get the t statistic.

Confidence Intervals:

Sigma Known. Uses the standard

CI formula (Using Z) to determine the range with

CI% chance of containing the true mean

of the population.

Sigma unKnown. Uses the standard

CI formula (Using t) to determine the range with

CI% chance of containing the true mean

of the population.

CI for a proportion. Uses the standard

CI formula (Using p,n,Z) to determine the range with

CI% chance of containing the true mean

of the population.

StatUtils:

Permutations and Combinations give number

of ways to select n Items out of N Items.

In Permutations Order of selected Items matters,

in Combinations it does not. Sampling is

without replacement.

Sample size n, is number needed for CI with

following parameters:

alpha - CI between 0 and 1.0

sigma - Known standard deviation.

E - desired error.

Formula is: n = (Z^2 * s^2) / E^2

Z is Z score for (1-alpha)/2

Free, but please visit this APP in

the Google Play store to Rate and

enter comments. This will help us

improve the APP over time.

Please note:

Due care is taken in creating this APP.

However no warranty is intended or

implied.