Приложения разработчика chad russell в Android Market

StatDroid (v. 1.0)

chad russell опубликовал приложение 2011-06-21
(обновлено 2011-06-21)

Distributions (calculate both normal and inverse probabilities):
Beta
Binomial
Cauchy
Chi Squared
Exponential
F
Gamma
Hypergeometric
Normal
Poisson
T
Weibull
Zipf


Equations and Tests:
Common One-Variable Statistics:
including --
  minimum
  maximum
  sum
  product
  sum of squares
  sum of logs
  mean
  first quartile
  third quartile
  geometric mean
  variance
  standard deviation

Chi Square Test (gives alpha value)
Covariance
Pearsons Correlation
Spearmans Correlation
T Test
Error Function
Linear Regression


AND...
over 100 relevant equations including
Sample mean
Sample standard deviation
Sample variance
Variance of sample proportion
Linear correlation
Linear Regressoin
Regression coefficient
Factorial
Permutation
Probability formulas
Expected Value
Sampling Distributions
Standard error of proportion, difference, sample means
Discrete Probability distributions
... and many many more!

If you are taking AP Statistics or University Statistics this app is a necessity

CAS for Android (v. 2.0)

chad russell опубликовал приложение 2011-04-23
(обновлено 2011-04-23)

CAS for Android is the first computer algebra system for Android. Computer Algebra systems solve equations symbolically, meaning that rather than simply solving for a numerical value, answers can be left in terms of variables.
It can be used for classes ranging from Algebra I to Calc III.


CAS for Android currently supports:

Solving Ordinary Differential Equations
Both Definite and Indefinite Integrals (single, double, and triple)
Line Integrals
First, Second, and Third Derivatives
First, Second, and Third Partial Derivatives with respect to multiple variables
Calculating Arc Length
Calculating Tangent Lines and Tangent Planes
Calculating Taylor Series
Isolating Variables in Equations
Solving Systems of Equations
Computing Sums
Matrix Calculations
And More!


**Warning: does not work on phones with Android 1.5 or lower