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# chapter6 - Chapter 6 Probability PowerPoint Lecture Slides...

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Chapter 6 Probability PowerPoint Lecture Slides Essentials of Statistics for the Behavioral Sciences Seventh Edition by Frederick J. Gravetter and Larry B. Wallnau

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Chapter 6 Learning Outcomes
Concepts to review Proportions (Math Review, Appendix A) Fractions Decimals Percentages Basic algebra (Math Review, Appendix A) z -scores (Chapter 5)

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6.1 Introduction to Probability Research begins with a question about an entire population. Actual research is conducted using a sample. Inferential statistics use sample data to answer questions about the population Relationships between samples and populations are defined in terms of probability
Figure 6.1 Role of probability in inferential statistics

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Definition of Probability Several different outcomes are possible The probability of any specific outcome is a fraction or proportion of all possible outcomes outcomes possible of number total A as classified outcomes of number A of y probabilit =
Definition of Random Sample Each individual in the population has an equal chance of being selected Probabilities must stay constant from one selection to the next if more than one individual is selected

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Probability and Frequency Distributions Probability usually involves population of scores that can be displayed in a frequency
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## This note was uploaded on 04/08/2011 for the course PSY 216 taught by Professor Cynthiaingle during the Spring '11 term at KCTCS.

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chapter6 - Chapter 6 Probability PowerPoint Lecture Slides...

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