# Ch 51: ORELA Math: Summarizing Data

The ORELA Mathematics certification exam used in the state of Oregon to certify math teachers. Watch these lesson videos to refresh your knowledge of the descriptive statistics used to summarize data as part of your review for the ORELA Mathematics.

## ORELA Mathematics: Summarizing Data - Chapter Summary

As part of a preparation course for the ORELA Mathematics exam, this chapter has been compiled to aid in your review of descriptive statistics and percentile ranks. Watch the lesson videos of professional instructors as they demonstrate calculations for central tendency, variance, and percentiles to gain a mastery over:

• Finding the mean, median and mode of a distribution
• Visual analysis of distributions and distribution curves
• Measures of dispersion and skewness
• Range of distributions and outliers
• Quartiles and interquartile range
• Finding percentiles
• Calculating standard deviation and variance
• Effects of linear transformations

After viewing the lesson videos, complete lesson worksheets and quizzes to further improve your understanding of the statistical procedures presented in this chapter. Then using the lesson quizzes find areas of weakness and fortify them by returning to the lesson videos with video tags. For an alternative review of the material, read over the lesson transcripts which present the same material but in an easy-to-read written format.

### ORELA Mathematics: Summarizing Data - Chapter Objectives

Math teachers in the state of Oregon are required to take the ORELA Mathematics test for certification. This computerized exam is composed of 150 multiple-choice questions and is administered in a 4 hour and 15 minute long testing session. Nineteen percent of the questions on this exam is in the domain of Statistics, Probability and Discrete Mathematics, including those asking about descriptive statistics. This chapter has been constructed to help you review measures of central tendency, distribution and percentile so that you will be able to accurately answer these questions on test day.

13 Lessons in Chapter 51: ORELA Math: Summarizing Data
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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