Discover why Microsoft created Semantic Kernel and how it helps developers move beyond prompt engineering to build scalable AI systems using orchestration, memory, plugins, and AI agents.

Learn how to conduct a one-sample T-test for a population mean using hypothesis testing, T-scores, and critical values. Understand when and why to use the T-distribution.

Learn how to perform a one-tailed or two-tailed Z-test for a population proportion. This guide walks through hypothesis setup, Z-score calculation, and P-value interpretation with a real-world case.

Learn how to formulate null and alternative hypotheses, understand their role in statistical significance testing, and apply them through real-world examples like click-through rates and server response times.

Learn to calculate confidence intervals using two fresh examples — one for estimating an average (mean) and one for estimating a percentage (proportion) in real-world data science scenarios.

Learn how to calculate the ideal sample size needed for your survey or experiment using step-by-step examples and formulas. Perfect for means or proportions.

Understand 90%, 95%, and 99% confidence intervals with real-world examples, Python code, and ML use cases. Learn how confidence levels affect interval width and precision.

Learn how to build a confidence interval for a population proportion step by step. Ideal for binary data, surveys, and evaluating classification accuracy in machine learning. Includes Python examples.

Learn how to construct a confidence interval for a population mean when the standard deviation is unknown using the t-distribution.

Learn how to calculate a confidence interval when the population standard deviation is known using a real-world example on teen screen time.