Intro to Statistics Notes
Intro to Statistics Notes STA 215
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This 2 page Class Notes was uploaded by Angela Meador on Sunday September 4, 2016. The Class Notes belongs to STA 215 at Grand Valley State University taught by Robert H. Pearson in Fall 2016. Since its upload, it has received 4 views. For similar materials see Introductory Applied Statistics in Statistics at Grand Valley State University.
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Date Created: 09/04/16
Important Vocabulary Chapter 1 Data interpretations engaged from a group of people on one or more variables. Types of Variables Categorical values are CATEGORIES Scale of calculation o Nominal values that are categorical that CANNOT be systematic. Example gender cannot be ordered o Ordinal values that are categorical that CAN be systematic such as small too big. Quantitative values are meaningful NUMBERS Scale of calculation o Interval meaningful numbers. We know the difference between the variables. Such as time. o Ratio meaningful numbers. We know the difference between the variables and consider zero. It can be subtracted, divided, multiplied, or added. Such as weight. Descriptive Statistics describing the data one has Inferential Statistics how we are using the data and what we are using it for. Such as using our statistics from a sample to signify the population Parameter number figure to represent the Population Statistic number figure to represent the Sample n Number of individuals in a sample bulk N Number of individuals in a population bulk Simple Random Sampling Hat Method. List of individuals, shake randomly, then pick n. Steps to do Simple Random Sampling on Calculator 1. Math 2. Prob 3. Rand Int (,) – Population of sample size Side note if you want 5 random names hit enter 5 times.