## App Purchase

Enter the last 8 digits of your 27-digit TI-Nspire's Product ID.

Located under 5:Settings → 4:Status → About ID may look like: 1008000007206E210B0BD92F455 HELP. If this was your ID you would only type in BD92F455.

At the end of the PayPal checkout, you will be sent an email containing your app. Read Installation Instructions Price:\$49.95

## Description

• Users have boosted their Statistics and Probability knowledge.
• Shows Step by Step solutions for most Statistics and Probability topics.
• Step by Step Confidence Intervals for mean, proportion, 2 means, 2 proportions, variance, slope, etc.
• Compute Sample Sizes for Confidence Intervals.
• Step by Step Tests of Significance (Z-Tests, T-Tests, ChiSquare Goodness of Fit and Independence tests, 2-sample T tests, 2 proportion Z tests, for Variance, etc)
• Step by Step F Test for 2 variances
• Step by Step Regression.
• Read about Significant Tests: Type 1 Error, Type 2 Error, Power of a Test.
• Much easier handling than other Statistics packages: Choose to enter Data or Statistic values. Select Significant/Confidence Levels easily.
• Distributions: compute probabilities, etc.
• Includes Binomial, Geometric, Normal, Student-t, Exponential, Poisson, Multinomial, Hypergeometric, F-, Chi-Square and more Distributions.
• Probability Checker for independent events, disjoint events. Also solves P(A or B)=P(A)+P(B)-P(A and B) for the unknown.
• Regressions: Linear , Quadratic, Cubic, Quartic, Sinusoidal, Logarithmic, Exponential, Power, MedMed
• Step by Step Derive the Coefficients for a Linear Regression Line, the Coefficient of Determination and the Correlation Coefficient.
• Also: Z-score Solver, Random Number Generator, etc
• 1 or 2 variable stats on mean, mode, median, standard deviation, variance, range
• Random Variables: Compute Variance, Expected Value and Standard Deviation.
• Additional Modules x`on: Probability, Combinatorics, Percentages, Ratios, Proportions, Exponential and Logarithmic Functions, Exponential Function Solver, Equation Solver

## FUNCTIONALITY & MENU ITEMS OF APP :

### Combinatorics

• n1*n2*n3*.. = Multiplication Principle
• n! = Number of Rearrangements
• nPr = Number of ways to rearrange r given n
• nCr = Number of ways to pick r given n
• n^r = # ways to rearrange n items repeated r times
• (n+r-1)!/((n-1)!*r!) = Select r given n w. repeatition
• Binomial Coefficients & Pascal Triangle

### Probability & Expected Value

• Odds <-> Probability
• Conditional Probability
• Expected Value: Find mu and s
• P(A or B)=P(A)+P(B)-P(A and B)
• Check if A and B are dependent or disjoint
• P(A or B or C)

### Confidence Intervals

• Read: Confidence Intervals & their Behavior
• CI for Mean mu with known Standard Deviation
• CI for Mean: Sample Size given Margin of Error
• CI for 2 Means with known Standard Deviations
• CI for Mean mu with unknown Standard Deviation
• CI for 2 Means with unknown Standard Deviations
• CI for Proportion p
• CI for p: Sample Size given Margin of Error
• CI for 2 Proportions
• CI for Variance s^2 of Population
• CI for Variance s^2 of Sample

### Statistics

• Find Average
• Find Weighted Average
• Find Std Deviation
• Find Quartiles & 5-Number Summary
• Find Percentiles
• Z-score Solver

### Regression

• Find Regression Line y=mx+b
• Find Regression Line y=mx+b Step by Step
• Find Regression Line y=a+bx
• Read: Correlation is not Causation!
• Find Median-Median Line y=mx+b
• Find Cubic Regression y=ax^3+bx^2+cx+d
• Quartic Regression y=ax^4+bx^3+cx^2+dx+e
• Find Power Regression y=a*b^x
• Find Exponential Regression y=a*x^b
• Find Logarithmic Regression y=a+b*ln(x)
• Find Sinusoidal Regression y=a*sin(bx+c)+d
• Logistic Regression y=c*e^(bx)/(e^(bx)+a)

### Distributions

• Binomial Distribution Table
• Cumulative Binomial Distribution
• Normal Distribution
• Inverse Normal Solver
• Exponential Distribution Table
• Geometric Distribution Table
• Cumulative Geometric Distribution
• Poisson Distribution Table
• Cumulative Poisson Distribution
• Student T-Distribution Table
• Cumulative T-Distribution
• Inverse T Solver
• Chi^2-Distribution Table
• Cumulative Chi^2-Distribution
• Inverse Chi^2-Solver
• F-Distribution Table
• Cumulative F-Distribution
• Inverse F-Solver

### Tests of Significance

• Z-Test for Mean Ho:mu=mu_o
• Z-Test for Means Ho:mu1=mu2
• Z-Test for Proportion Ho:p=po
• Z-Test for Proportions Ho:p1=p2
• T-Test for Mean Ho:mu=mu_o
• T-Test for Means Ho:mu1=mu2
• F-Test for Ho:s1=s2
• ChiSquared-Test: Goodness of Fit
• ChiSquared-Test of Independence

### Markov Chains & Stoch. Matrices

• Stochastic and Regular Stochastic Matrix
• Probability Vector
• Terminal State & Fixed Probability Vector
• Find A^n
• nth State of a Markov Chain: p0*A^n

• Moving Average
• Simple Exponential Smoothing
• Exponential Smoothing with Seed
• Portfolio Return
• Portfolio Risk

### Decision Analysis

• Wald Mini-Max Strategy
• Hurwicz Maxi-Max Strategy
• Savage Maxi-Min Strategy
• LaPlace Expected-Value Strategy
• Unequal Probability Strategy