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## Methods Of Data Analysis

by: Giovanna Casper

30

0

2

# Methods Of Data Analysis SOC 2830

Marketplace > Western Michigan University > Sociology > SOC 2830 > Methods Of Data Analysis
Giovanna Casper
WMU
GPA 3.71

Yuan-Kang Wang

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COURSE
PROF.
Yuan-Kang Wang
TYPE
Class Notes
PAGES
2
WORDS
KARMA
25 ?

## Popular in Sociology

This 2 page Class Notes was uploaded by Giovanna Casper on Wednesday September 30, 2015. The Class Notes belongs to SOC 2830 at Western Michigan University taught by Yuan-Kang Wang in Fall. Since its upload, it has received 30 views. For similar materials see /class/216812/soc-2830-western-michigan-university in Sociology at Western Michigan University.

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Date Created: 09/30/15
91211 NEXT MONDAYWILL BEIN SANGREN 1206 SOC 2830 Outline 0 Basic math review 0 Descriptive and inferential statistics Basic over view 0 Z sigma is quotthe summation of 0 2X1 means quotthe summation of all the scoresquot Xi 12 17 22 2X1121722 51 2X3 122 172 222 144 289 484 917 2X02 1217222 512 2601 Rules ofprecedence o Squares and square root gt multiplication and division gt addition and subtraction o The rules may be overridden by parentheses o 23X421214 o 82X22282X428828412 824328610 4X9210 36210 188 Statistical Applications 0 Two main statistical applications 0 Descriptive statistics I quotWhat is the average family income in Kalamazoo o Inferential Statistics Descriptive Statistics 0 Summarize variable one at a time o Summarize the relationship between two or more variables 0 Data reductions reduce a large amount of data into a few easily understood numbers 0 Univariate descriptive statistics include only one variable 0 Percentages averages and various charts and graphs 0 Bivariate descriptive statistics describe the strength and direction of the relationship between two variables 0 Example older students have higher GPAs 0 quottime spent studying statistics and quotfinal grade in statistics 0 Association correlation causation o Multivariate descriptive statistics describe the relationships between three or more variables 0 Example grade increase with age for females but not for males Inferential statistics Exercise 0 Generalize from a sample to a population 0 Population includes all cases in which the researcher is interested 0 Samples include carefully chosen subsets of the population Voter surveys are a common application of inferential statistics Several thousand carefully selected voters are interviewed about their voting intentions This information is used to estimate the intentions of all voters millions ofpeople Example The Republican candidate will receive 77 of the poll 0 O O A researcher wants to study the number ofjob interviews of graduating seniors in the United States What is the population The Pew Research Center reports that the favorable rating of the United States Supreme Court in this country fell to 57 in July of 2007 based on national survey of 1503 adults This is an example ofstatistics A univariate descriptive B bivariate descriptive C inferential D both quotaquot and quotcquot

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