cheating sheet

cheating sheet - Parameter: Descriptive measure of a...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Parameter: Descriptive measure of a population Ex: Average salary of the 837 baseball players, μ = 1,447,690 Sample: Set of data drawn from the population Statistic: Descriptive measure of a sample Population: Set of all items of interest in a statistical problem; size of a population can be finite or infinite. Scales of Measurement Ratio: Quantitative scale Inherently defined zero (salary, height, distance) Interval: Quantitative scale Ratios not meaningful No inherently defined zero (temperature) Ordinal: Qualitative ( categorical ) scale Meaningful order of categories (income, class) Nominative: Qualitative ( categorical ) scale No meaningful ordering (gender, ethnic class) Descriptive Statistics: Body of techniques to summarize and present the essential information in a data set. Ex: Daily high temperatures for Jan 16, 1991 in 30 U.S. cities: Measures of central tendency: Mean (m): Average or expected value Median (Md): Middle point of ordered observations Mode (Mo): Most frequent value
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/31/2008 for the course BUAD 310 taught by Professor Lv during the Spring '07 term at USC.

Page1 / 2

cheating sheet - Parameter: Descriptive measure of a...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online