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Statistics decision tree
Source: Muhlenberg College - http://www.muhlenberg.edu/depts/psychology/docs/statsdecision.pdf
Basic Statistical calculators
The links below will take you to basic calculators for some commonly used statistal analysis used in pscyhology from Social Science Statistics website.
Mann-Whitney U-value Calculator
The Mann-Whitney test is a nonparametric test that allows two groups or conditions or treatments to be compared without making the assumption that values are normally distributed.
The Chi-square tests for association between two categorical variables
Spearman's Rho Calculator
Spearman's Rho is a non-parametric test used to measure the strength of association between two variables, where the value r = 1 means a perfect positive correlation and the value r = -1 means a perfect negataive correlation.
Single Sample T-Test Calculator
A single sample t-test (or one sample t-test) is used to compare the mean of a single sample of scores to a known or hypothetical population mean.
T Test Calculator for 2 Dependent Means
The t-test for dependent means (also called a paired samples t-test, matched pairs t-test and matched samples t-test) is used to compare the means of two sets of scores that are directly related to each other.
Below you will find an introductory Statistics course which uses some fun graphics to introduce basic concepts that will be useful to your research from the Statistics Learning Centre. Feel free to browse around the collection of videos to gain a deeper understanding at your own pace.