M119L07to08-page1

M119L07to08-page1 - (Lesson 7: Measures of Relative...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
(Lesson 7: Measures of Relative Standing or Position; 3-4) 3.30 LESSON 7: MEASURES OF RELATIVE STANDING OR POSITION (SECTION 3-4) How high or low is a data value relative to the others? We want standardized measures that will work for practically all populations involving quantitative data. PART A: z SCORES z = x ± mean SD Idea: ² new mean = 0 ² new SD = 1 ³ ´ µ · ¸ We are transforming the original data set of x -values into a new data set of z -values. x 1 x 2 x 3 etc. ±±± z 1 z 2 z 3 etc. Subtracting off the mean from all of the original x -values recenters the data
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online