Rice University
Hyper Stat Online Statistics Textbook: Four Basic Statistics Variables
The basic definitions of four statistics variables - quantitative, qualitative, dependent and independent - are provided here.
Shodor Education Foundation
Shodor Interactivate: Lessons: Advanced Fire
Lesson plan to help students understand independent and dependent variables through a fire probability simulation.
Texas Instruments
Texas Instruments: Domain and Range
This StudyCard stack uses real-world contexts to teach the concepts of independent and dependent variables, and then domain and range. It includes practical examples at the end.
Khan Academy
Khan Academy: Dependent and Independent Variables
In this exercise, students practice identifying dependent and independent variables. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Vassar College
Vassar College: Multiple Regression
This is an interactive site allowing the student to input data (one dependent and three independent variables) and then letting the computer calculate the regression between these multiple forces.
Calculator Soup
Calculator Soup: Rhombus Calculator
Calculate certain variables of a rhombus depending on the inputs provided. Calculations include side lengths, corner angles, diagonals, height, perimeter, and area of a rhombus.