Joseph Mburu
Joseph is an experienced Statistician and Data Analyst with over six years of hands-on work in applied statistics, data science, and quantitative research. He holds advanced degrees in Applied Statistics and Data Analytics, reflecting strong technical and academic expertise. Joseph is the founder of Stat Study Hub, a platform designed to help students, researchers, and professionals understand statistics through clear explanations, interactive calculators, and practical examples. Known for a friendly, step-by-step teaching approach, he is committed to making statistics simple, accurate, and usable for everyone.
Latest Articles by Joseph Mburu
Cochran’s formula: Definition, Calculation, When to Use it & Mistakes to Avoid
December 9, 2025
When writing the methodology section of a quantitative research study, you may need to determine the appropriate sample size. While searching for the best sample size formula, you might come across Cochran’s formula. This formula makes it easy to calculate the ideal number of participants needed for accurate results. It also ensures your study is […]
Read MoreFive Number Summary: What is it and how to calculate it
December 4, 2025
A five number summary is a simple way to describe a dataset using just five key values: the minimum, first quartile (Q1), median, third quartile (Q3), and maximum. These numbers give you a quick snapshot of how data is spread, helping you understand patterns, detect unusual values, and summarize large datasets efficiently. Knowing the five […]
Read MoreDescriptive Statistics: Definition, Types, & Examples
December 3, 2025
Descriptive statistics are methods or techniques that are widely used to organize and summarize data in a clear and simple way. In data analysis, descriptive statistics serve as preliminary tests to help you organize, summarize, and uncover the main characteristics of the data. Simply stated, these statistics allow you to gain an overview of the […]
Read MoreHow to Find Sample Mean in Excel
November 27, 2025
The sample mean is one of the most common and useful measures in statistics. It gives you a single number that summarizes the average value of your data, making it easier to understand patterns, compare groups, and make decisions. Whether you’re a student, researcher, or professional, knowing how to calculate it quickly can save you […]
Read MoreF Critical Value in Excel
November 22, 2025
After performing an F-test for ANOVA, equality of variance test, or a regression model, you obtain an F-test statistic. The next step involves finding an F-critical value to help you determine whether the results are statistically significant or not. There are various methods for finding F-critical values. The classical approach involves reading critical values from […]
Read MoreF Distribution Table/F-Critical Value Table
November 21, 2025
After computing the F-test statistic for ANOVA, regression, or the F-test for equality of variance, you need to determine whether the results are statistically significant or not. Using the classical approach, you’ll need to find the F-critical value corresponding to your significance level (α), numerator degrees of freedom (df1), and denominator degrees of freedom (df2). […]
Read MoreHow to Find T Critical Value in Excel
November 17, 2025
After calculating the t-test statistic, the next step is finding a t-critical value to help you decide whether or not to reject the null hypothesis. If the absolute t-statistic value is greater than the absolute t-critical value, we reject the null hypothesis. Otherwise, you fail to reject the null hypothesis. Now, you might be asking, […]
Read MoreT-Distribution Table
November 15, 2025
The t-distribution table is a chart that shows critical values for the t-distribution. These values help you decide if your test results are statistically significant. This page includes the main t tables, including a one-sided t-distribution table, a two-sided t-distribution table, and a combined t-distribution table, so you can quickly find the values you need […]
Read MoreHow to Find T Critical Value (Using T-Distribution Tables)
November 15, 2025
The t-critical value is an essential part of statistics and hypothesis testing. It helps you decide whether your results are significant or just due to chance. Without the t-critical value, it is impossible to make accurate conclusions from small sample data. In this guide, you will learn what a t-critical value is, why it matters […]
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