STATISTICS PROBABILITY HELP INFORMATION

Descriptive Statistics,
Biology, Sociology,Psychology and Criminal Justice Statistics supported.
Data Classifications : Ordinal, Nominal, Interval, Ratio,
Class Intervals, Class Mark, Class Width.
Lower and Upper Class Limits,
Frequency Distributions,
Cumulative Frequency Distributions,
Histograms,
Grouped and Ungrouped Data,
Skewness and Kurtosis,
Discrete Random Variables
Continuous Random Variables
Univariate Bivariate Data
PROBABILITY DISTRIBUTIONS:

Sample Spaces with dice, cards, coins, colors, etc.
Sampling With or Without Replacement
Withdrawing items from an urn
Combinations of people to form committees
Combinations (nCr) and Permutations (nPr)
Population vs. Sample Standard Deviation
Population vs. sample Variance
Expected Value E(x)
Statistical Tables
Binomial Distribution help B(x,n,p)

Normal Distribution N(mu, sigma)
Exponential Distributions
Poisson Distributions (time)
Parametric Testing
Sampling Distributions
Standard Error of means
Central Limit Theorem
T- Distribution help T(df, alpha)
Degrees Of Freedom Df = n-1
Chi-Square Distribution help
F Distribution F(df1, df2, alpha)
Proportions p-hat pooled
Hypothesis Testing
Type I Type II errors
Null Hypothesis H0, Alternate Hypothesis Ha H1
Level of significance alpha
one- tailed two-tailed test determination
Decision Rules (Reject H0 if test statistics > critical value)
Test Statistic calculations
Hypothesis Decisions , Hypothesis Conclusions
Sample Size Determination
Confidence Intervals
Statistical PValue (p-value)
Research Methods
Analysis Of Variance (ANOVA) , 1-way 2-way ANOVA help , Between Within Groups ANOVA
Linear Regression Equation
Pearson’s Correlation coeficient (r)
Adjusted R-squared
Nonparametric Tests
Power of a Test (beta )
MORE
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