Podcast
Questions and Answers
What is the primary objective of descriptive statistics?
What is the primary objective of descriptive statistics?
- To draw conclusions about the population
- To describe the characteristics of the sample (correct)
- To collect and organize data
- To perform estimations and make predictions
What type of statistics is used when the population data set is small?
What type of statistics is used when the population data set is small?
- Inferential statistics
- Theoretical statistics
- Applied statistics
- Descriptive statistics (correct)
What is the term for individual pieces of factual information recorded and used for the purpose of analysis?
What is the term for individual pieces of factual information recorded and used for the purpose of analysis?
- Variable
- Statistics
- Biostatistics
- Data (correct)
What is the primary goal of inferential statistics?
What is the primary goal of inferential statistics?
What is the type of statistics that deals with data analysis in biological and health fields?
What is the type of statistics that deals with data analysis in biological and health fields?
What is the term for any characteristic, number, or quantity that can be measured or counted?
What is the term for any characteristic, number, or quantity that can be measured or counted?
What is the primary source of data for primary statistics?
What is the primary source of data for primary statistics?
What is the term for the process of organizing, summarizing, and presenting data?
What is the term for the process of organizing, summarizing, and presenting data?
Study Notes
Types of Statistics
- Inferential Statistics: uses sample data to make inferences about the population
- Descriptive Statistics: organizes and summarizes data using numbers and graphs, describes characteristics of the sample
Inferential Statistics
- Objective is to draw conclusions about the population data
- Involves drawing conclusions, performing estimations, and making predictions
- Tools used: Hypothesis test, ANOVA
- Form of results: probability score
Descriptive Statistics
- Objective is to describe the characteristics of the sample data
- Involves collection, organizing, summarizing, and presenting data
- Tools used: Measure of Central Tendency, Measure of Variability
- Results presented in charts, graphs, and tables
Measure of Central Tendency
- Mean
- Mode
- Median
Measure of Variability
- Range
- Variance
- Dispersion
Kinds of Statistics
- Theoretical Statistics
- Mathematical Statistics
- Applied Statistics
- Inferential Statistics
- Descriptive Statistics
Data
- Definition: Individual pieces of factual information recorded and used for the purpose of analysis
- Can be primary or secondary
- Primary data sources: surveys, interviews, pools
- Secondary data sources: annual reports, internet data, open governmental data
Biostatistics
- Definition: application of statistical principles to biological and health fields
Variables
- Definition: any characteristic, number, or quantity that can be measured or counted
- Example variables: Gender, Hair color, Ethnicity, Economic status
- Types of data: Nominal, Ordinal, Qualitative, Quantitative, Discrete, Continuous
- Examples of discrete data: number of students in a class, number of home runs in a baseball game
- Examples of continuous data: height of children, square footage of a two-bedroom house, speed of cars
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Description
Understand the basics of statistics, including descriptive and inferential statistics, their objectives, and tools used. Learn how to make inferences and draw conclusions about population data.
