Testimonials
It makes us very happy to hear praises all the time from our clients. We hope that you
will be the next.
- "Thank you John, I wouldn't have made it without your help". Chris, Long Beach, CA
- "You're simply the best. I'll be sending more work to you guys!". Katty, Anderson, Ohio
- "It was my first time with an online service, and let me tell you that you
made my life easier. Thank you so much.". James, Albuquerque, Arizona
- "I really appreciate the timely response you provided". Sarah, Orange County, California
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Probability
- Basic Concepts: Sample Space, Events
- Densities and Distributions
Descriptive statistics
- Descriptive Analysis of data
- Graphs and charts
- Histograms
Inferential Statistics
- Means, variances, populations, samples
- Confidence Intervals.
- Z-test, T-test, F-tests and Chi-Square Tests
- ANOVA, Factorial ANOVA, MANOVA
- Linear and non-linear regression
Non-parametric Statistics
- Sign Test
- Wilkinson Tests
- Kruskal-Wallis Test
- Spearman Correlation Coefficient
- Run Tests
Statistical Softwares
- SPSS
- Minitab
- STATDISK
- PHStat2
- Excel
- Matlab
- Mathematica
- R and S-Plus
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