chapter2

# chapter2 - Chapter 2 Frequency Distributions PowerPoint...

This preview shows pages 1–12. Sign up to view the full content.

Chapter 2 Frequency Distributions PowerPoint Lecture Slides Essentials of Statistics for the Behavioral Sciences Seventh Edition by Frederick J Gravetter and Larry B. Wallnau

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 2 Learning Outcomes
Concepts to review Proportions (math review, Appendix A) Fractions Decimals Percentages Scales of measurement (Chapter 1) Nominal, ordinal, interval, and ratio Continuous and discrete variables (Chapter 1) Real limits (Chapter 1)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2.1 Introduction to Frequency Distributions A frequency distribution is An organized tabulation Showing the number of individuals located in each category on the scale of measurement Can be either a table or a graph Always shows The categories that make up the scale The frequency, or number of individuals, in each category
2.2 Frequency Distribution Tables Structure of Frequency Distribution Table Categories in a column (usually highest to lowest) Frequency count next to category To compute ΣX from a table Convert table back to original score or Compute Σ f X

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Proportions and Percentages Proportions Measures the fraction of the total group that is associated with each score Called relative frequencies because they describe the frequency ( f ) in relation to the total number (N) Percentages N f p proportion = = Expresses relative frequency out of 100 Can be included as a separate column in a frequency distribution table ) 100 ( ) 100 ( N f p percentage = =
Ex. 2.3 Frequency, Proportion and Percent in a Table This is an adaptation of example 2.3

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Learning Check Use the Frequency Distribution Table to determine how many subjects were in the study
Learning Check - Answer Use the Frequency Distribution Table to determine how many subjects were in the study

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Learning Check Is each of these statements True or False for the Frequency Distribution shown?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 04/08/2011 for the course PSY 216 taught by Professor Cynthiaingle during the Spring '11 term at KCTCS.

### Page1 / 40

chapter2 - Chapter 2 Frequency Distributions PowerPoint...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online