Author: Will
t-distribution Table
T-Distribution Table Student’s T-Distribution Table This table shows critical values of the t-distribution for both one-tailed and two-tailed tests. df α = 0.1 α = 0.05 α = 0.01 One-Tail Two-Tail One-Tail Two-Tail One-Tail Two-Tail 1 3.0777 6.3138 6.3138 12.7062...
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Central Limit Theorem: Examples and Explanations
Central Limit Theorem (CLT) states that when you take a sufficiently large number of independent random samples from a population (regardless of the population’s original distribution), the sampling distribution of the sample mean will approach a normal distribution. This tutorial...
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Levene’s Test in SPSS
1. What is Levene’s Test? Levene’s Test is a statistical test used to assess the equality of variances (homogeneity of variance) across multiple groups. It checks whether different samples have similar variances, which is an important assumption for parametric tests...
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Z table: Two-tail and One-tail
Two-tail Standard Normal Z-table Two-tail Standard Normal Z-Table |Z| 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.0 1.0000 0.9920 0.9840 0.9761 0.9681 0.9601 0.9522 0.9442 0.9362 0.9283 0.1 0.9203 0.9124 0.9045 0.8966 0.8887 0.8808 0.8729 0.8650 0.8572...
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Python Code to Plot F-distribution Density Function
import numpy as npimport matplotlib.pyplot as pltfrom scipy import statsdef plot_f_distribution(df1, df2, alpha=0.05): # Create x values for the plot x = np.linspace(0, 5, 1000) # Calculate F-distribution values y = stats.f.pdf(x, df1, df2) # Calculate critical F-value f_crit =...
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F-Distribution Critical Value Table
The following is the F Distribution Critical Value Table. The numbers in the table are critical values for F distribution with probably p in right tail of the distribution (see the figure illustration below). F Distribution Critical Values df2 p-value...
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WordPress on Google Cloud: Access phpMyAdmin and files
Unlike some typical WordPress host companies, there is no direct page on Google Cloud to access phpMyAdmin and WordPress files. In this post, I will provide a quick summary of the methods. phpMyAdmin for WordPress on Google Cloud For more...
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Calculate Sample Size for Chi-square Test
This tutorial shows how you can calcuate sample size for one variable chi-square test here. The example in this tutorial is that a marketing agency tests two versions of packaging (A version vs. B Version). The null hypothesis is that...
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Fisher’s LSD (Least Significant Different) in R
This tutorial shows how to do the post hoc test using Fisher’s LSD (Least Significant Different) in R. When to use Fisher’s LSD Typically, it is when you are doing one-way ANOVA with more than 2 groups (e.g., 3 groups). Further,...
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Calculate p-value in Linear Regression
This tutorial shows how you can calculate p-value for linear regression. It includes formulas and data examples in Python. Formulas for p-value in Linear Regression We can estimate the regression coefficient B using the following formula. Where, Such calculation only...
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