Our Services
Professional Data Analysis Services
From descriptive statistics to advanced mediation models, we provide comprehensive statistical analysis using SPSS, Excel, and Python. Every analysis includes interpretation guidance and APA-formatted reporting.
Descriptive Statistics
Mean, median, mode, standard deviation, frequency distributions, and visual summaries of your data. The foundation of any solid analysis.
Common use cases: Survey data summaries, demographic profiling, academic results chapters, exploratory data analysis.
What's Included
- Measures of central tendency (mean, median, mode)
- Measures of spread (SD, variance, range, IQR)
- Frequency tables and cross-tabulations
- Histograms, box plots, and bar charts
- Normality testing (Shapiro-Wilk, Kolmogorov-Smirnov)
Hypothesis Testing
T-tests (independent & paired), Z-tests, chi-square tests, and non-parametric alternatives. Rigorous testing with clear interpretation.
Common use cases: Comparing group means, testing survey differences, experimental vs. control group comparisons, pre/post intervention studies.
What's Included
- Independent samples t-test
- Paired samples t-test
- One-sample t-test and Z-test
- Chi-square test of independence
- Mann-Whitney U, Wilcoxon signed-rank, Kruskal-Wallis
ANOVA Analysis
One-way, two-way, and repeated measures ANOVA with post-hoc tests (Tukey, Bonferroni). Complete with effect sizes and assumption checks.
Common use cases: Comparing three or more groups, experimental designs, educational research, clinical trials.
What's Included
- One-way ANOVA with post-hoc comparisons
- Two-way (factorial) ANOVA with interaction effects
- Repeated measures ANOVA
- ANCOVA (analysis of covariance)
- Effect sizes (eta-squared, partial eta-squared)
Regression Analysis
Simple, multiple, and logistic regression with prediction models. Includes coefficient interpretation, R-squared, and residual diagnostics.
Common use cases: Predicting outcomes, identifying key predictors, business forecasting, academic research models.
What's Included
- Simple linear regression
- Multiple regression with predictor selection
- Logistic regression (binary and multinomial)
- Multicollinearity checks (VIF, tolerance)
- Residual analysis and model validation
Correlation Analysis
Pearson, Spearman, and point-biserial correlations to measure relationships between variables with proper assumption testing.
Common use cases: Exploring variable relationships, survey research, preliminary analysis before regression, academic studies.
What's Included
- Pearson product-moment correlation
- Spearman rank-order correlation
- Point-biserial and partial correlations
- Correlation matrices and heatmaps
- Significance testing and confidence intervals
Mediation & Moderation
PROCESS macro analysis for mediator and moderator effects. Includes slope analysis, interaction plots, and bootstrapped confidence intervals.
Common use cases: Understanding causal mechanisms, testing theoretical frameworks, psychology and social science research.
What's Included
- Simple and parallel mediation models
- Moderation (interaction) analysis
- Moderated mediation and mediated moderation
- Bootstrapped indirect effects
- Johnson-Neyman regions of significance
Data Cleaning & Preparation
Outlier detection, missing data handling, normality testing, and assumption verification. Clean data is the basis of valid results.
Common use cases: Preparing survey data, cleaning messy datasets, pre-analysis data quality checks, ensuring statistical validity.
What's Included
- Missing data analysis and imputation
- Outlier detection (Cook's D, Mahalanobis distance)
- Data transformation (log, square root, z-scores)
- Recoding and computing new variables
- Assumption testing for parametric tests
End-to-End Research Data Analysis
Complete data analysis for research projects — from data cleaning and assumption testing through statistical analysis to APA-formatted results chapters.
Common use cases: Master's theses, PhD dissertations, capstone projects, journal article submissions, complete research projects.
What's Included
- Full data cleaning and preparation
- All required statistical tests
- APA 7th Edition results chapter
- Tables, figures, and interpretation
- Revision rounds and committee support
FAQ
Frequently Asked Questions
Common questions about our data analysis services.
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