About This Chapter
Experiments and Surveys - Chapter Summary
Now that you're familiar with experiment components and a variety of statistical measures, learn how to design experiment types in which independent variables are randomly assigned to test subjects. Lessons in this chapter can teach you how to analyze and interpret the results and assess the impact of confounding variables on experiment outcomes.
Instructors also introduce common causes of bias in statistics, so you can recognize them when assessing the reliability of poll and survey results. They'll also give you examples of the ways in which statistics can be used to intentionally mislead readers. By the time you finish viewing the lessons included in this chapter, you should be familiar with the following:
- Randomized experiment design
- Experiment analysis and interpretation
- Confounding and bias in statistics
- Sources of bias in polls and surveys
- Misleading uses of statistics
Let our seasoned instructors walk you through the ins and outs of randomized experiment design and show you how to identify misleading statistics with the videos and transcripts included in this chapter. Instruction is delivered by experienced educators who employ a teaching style that can help you cut these difficult topics down to size. Lessons also feature self-assessment quizzes that link back to video content, so you can get an idea of how well you've grasped the material or discern how much more study time you need to put in.
1. How Randomized Experiments Are Designed
When reading research or when conducting your own, it is important to understand the basic concepts of randomized experimental design that are covered in this lesson.
2. Analyzing & Interpreting the Results of Randomized Experiments
Analyzing and interpreting the results of an experiment can be a confusing process, and it's easy to make mistakes. This lesson will help you understand the important factors of experiment analysis.
3. Bias in Statistics: Definition & Examples
Statistics can be a powerful tool in research. Unfortunately, statistics can also have faults. In this lesson, you will learn about the faults in statistics and how to critically examine potential biases in research.
4. Bias in Polls & Surveys: Definition, Common Sources & Examples
When Mark Twain commented that there were three types of lies, he included statistics in the count. In this lesson, we look at bias, one of the ways in which statistics can mislead, and in some cases, flat out lie to us.
5. Misleading Uses of Statistics
It can be too easy to present statistics in a way that is misleading. This lesson will cover the ways in which a statistic can be misleading and how to avoid and identify misleading statistics.
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Other chapters within the TExES Mathematics 7-12 (235): Practice & Study Guide course
- About the TExES Math 7-12 Exam
- Real Numbers
- Mathematical Models
- Complex Numbers & the Complex Plane
- Number Theory
- Number Patterns
- Functions and Graphs
- Linear Functions
- Quadratic Functions & Polynomials
- Evaluating Piecewise & Composite Functions
- Rational and Radical Functions
- Inequalities and Absolute Values
- Exponentials & Logs
- The Unit Circle
- Trigonometric Functions
- Using a Scientific Calculator for Calculus
- Understanding Limits in Math
- Understanding Rate of Change
- Calculating Derivatives of Functions
- Derivatives and Graphs
- Optimization in Calculus
- Definite Integrals and Sums
- Integration Applications in Calculus
- Working with Measurement
- Finding Volume, Area & Perimeter
- Introduction to Proofs and Constructions
- Congruence and Similarity
- Real World Shapes
- Coordinate Geometry
- Understanding Transformations in Math
- Conic Sections
- Understanding Vectors
- Measuring & Displaying Data
- Data Distribution Overview
- Sampling in Statistics
- Distribution & Inference in Statistics
- Inference About a Mean
- Regression and Correlation
- Finding Probability
- Probability Distributions and Statistical Inference
- Mathematical Process & Perspectives
- Teaching Strategies & Activities for the Math Classroom
- Differentiated Instructional Strategies for the Math Classroom
- Using Student Assessments in the Math Classroom
- TExES Mathematics 7-12 Flashcards