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Ch 4: Observation and Data Collection

About This Chapter

Take a closer look at data collection techniques and the uses of print and electronic source materials. Video lessons in this chapter cover measures of variability as well as methods for evaluating scientific data and determining the reliability of source materials.

Observation and Data Collection - Chapter Summary

Use this chapter to affirm your understanding of the processes involved in studying changes to natural phenomena and review the technology available to help you collect and display experiment data. Our experienced instructors discuss measures of variability and the significance of data accuracy and precision.

These lessons are also designed to make sure you can recognize the risks associated with scientific experimentation and implement the proper safety precautions. Conclude your review with lessons covering the use of print and electronic source materials as well as methods for evaluating their reliability and credibility. Topics of instruction include:

  • Observations of natural phenomena
  • Scientific tools and technology
  • Methods for evaluating experiment data
  • Measures of variability and controlled tests
  • Experiment safety precautions
  • Reliability of print and electronic sources
  • Online research tips

These engaging lessons provide you with a convenient way to review observation and data collection techniques. You can watch the illustrated videos or read the transcripts at your own pace, anywhere you take your laptop or cell phone. Each lesson also comes with a quiz useful for determining when you're ready to move on to the next topic.

9 Lessons in Chapter 4: Observation and Data Collection
Observing Changes in Natural Phenomena Over Time

1. Observing Changes in Natural Phenomena Over Time

Science is all about observing changes - even when they are difficult to observe. Learn about how scientists observe changes in natural phenomena over time. Test your knowledge after the lesson with a quiz.

Using Technology in Scientific Experiments & Analysis

2. Using Technology in Scientific Experiments & Analysis

How is technology used in scientific experiments? How is it used to analyze data? Learn about how science and technology are related, and then take a quiz to see what you've picked up.

Evaluating Data from Scientific Investigation

3. Evaluating Data from Scientific Investigation

After watching this video, you will be able to explain the meaning of the terms 'accuracy' and 'reproducibility,' or precision, as they relate to science experiments. A short quiz will follow.

Variability in Statistics: Definition & Measures

4. Variability in Statistics: Definition & Measures

Variability is a measure of the spread of a data set. Learn more about the different measures of variability including the range, variance, and standard deviation, and how they are used in the field of Psychology.

Statistic Variability & Controlled Tests

5. Statistic Variability & Controlled Tests

In this lesson we will learn about what happens when statistical variability is not taken into account and how controlled tests can help prevent unknown variability.

Understanding Risks & Taking Safety Precautions in Science Experiments

6. Understanding Risks & Taking Safety Precautions in Science Experiments

An important step in designing your experiment involves identifying and evaluating any potential safety risks. Knowing what these risks are ahead of time can help you avoid accidents and dangerous situations, which helps keep the experiment safe and fun for all.

Evaluating Print & Electronic Sources for Research Projects

7. Evaluating Print & Electronic Sources for Research Projects

Print sources and Web sources are both used in research. This lesson will discuss how print and electronic sources compare and what you can to do determine the validity of your source.

Using Search Engines for Online Research

8. Using Search Engines for Online Research

The Internet can be a resource that saves you time, but if you don't know how to use it properly, it can be a frustrating experience. In this lesson, you will learn about how to properly find supporting materials online with research tips and tricks.

Evaluating Sources for Reliability, Credibility, and Worth

9. Evaluating Sources for Reliability, Credibility, and Worth

It's important to have information that is reliable, credible, and worthwhile in your speech. Sometimes, it's hard to determine these factors. This lesson will help you!

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