SMS 4651: Statistical Data Analysis
1 ) Introduction
What Is statistics?
Stats is a scientific research dealing with the gathering, analysis, meaning and demonstration of numerical data.
Descriptive versus Inferential Statistics
Populace is a assortment of persons, things or components of interest. Census is a process of gathering info from the complete population for any given dimension of interest.
Sample is a portion of the whole population.
Descriptive figures is statistics that have been collected on a group to describe or reach conclusions about the same group.
Inferential figures is statistics that have been collected from an example and utilized to reach results about the people from which the sample was taken. Parameter is a detailed measure of the population.
Statistic is a descriptive way of measuring a sample.
Types of Data
Nominal data adjustable is a qualitative data type used just to classify or perhaps categorize. Ordinal data changing is a qualitative data type used to classify or classify but the classifications are arranged according to certain order or get ranking.
Discrete data variable can be described as numerical info type used in counting target. Continuous data variable can be described as numerical info type found in measuring scalar of subject. Using SPSS
Retrieve data file from http://lib.stat.cmu.edu/DASL/Datafiles/Hotdogs.html and try to key in the info in SPSS. How fast can you take action?
Read Phase 1 вЂђ 2 from Mlong. pdf and also Chapter 1 by Gerber. pdf format. SPSS Physical exercises
Refer to Exercises for Section 1 in Gerber. pdf