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# Stats terms

What is Statistics? the science of collecting, organizing and analyzing data.
What is data? Values that variables can assume.
what are the two kinds of Stats Descriptive and Inferential.
What are Descriptive Stats? When you collect your own data, organize it and analyze it.
What are inferential Statistics? When the study is based on research that already exists.
What is a sample? A group of subjects being studied from a larger population.
What are the types of Sampling? Random, Cluster, Stratified, Systematic and Convenience
What is random Sampling? Sample group selected by chance not by hand or target.
What is Cluster sampling? Dividing into categories or groups to collect data
What is Stratified Sampling? Creating groups of characteristic important to a study then sampling from each group.
What is Systematic Sampling? When people are chosen systematically, every xth subject.
What is Convenience Sampling? When Data is collected in the most convenient way to you.
What are the four levels of measurement? Nominal, Ordinal, Interval and Ratio
What is Nominal Level of Measurement? Organizing data into sections where no-order or ranking can take place.
What is Ordinal Level of Measurement? classifying data into rank-able categories that do not have much difference.
What is Interval Level of Measurement? Data is ranked and precise differences between units of measure do exist. There is no real zero (temperature)
What is ratio level of Measurement? Data can be sorted into different measured categories with distinct meanings between each and a distinct true zero.
What are the two kinds of Data? Qualitative and Quantitative
What is a Qualitative Variable? Variables that can be divided into distinct categories according to a characteristic or attribute.
What is a Quantitative Variable? Variables that can be measured ranked or ordered with numerical values.
What are the two kinds of Quantitative data? Discrete and continuous.
What is a Discrete Variable? Definitive number, assume they can be counted
What is a continuous Variable? Can assume an infinite number of values between any two specific values, (decimals or fractions)
What are the three types of Study? Observational, Quasi-Experimental and Experimental
What is an Observational Study? Research is conducted by merely observing a present or past event and drawing their own conclusions.
What is an Experimental Study? Researcher manipulates one of the variables and tries to determine how the manipulation determines the other variables.
What is a Quasi-Experimental Study? A study that attempts to create a cause and effect relationship and is not randomized.
What is a measurement Scale? How variables are categorized, counted or measured wither nominal, ordinal, interval, or ratio.
What is a Variable? A measurable characteristic or attribute that can vary in value predictions.
What is a treatment Group? A group in an experiment that receives specific instructions/treatment.
What is the population? Population consists of all subjects that are being studied.
What is probability? The odds or chances of a specific event occurring.
What is a random variable? Variables that are chosen by chance.
What is a control group? A group that is not exposed to variables in the experiment.
What is a data set? A collection of data.
What is a Data Value Or Datum ? Each Specific data point in the data set.
What is the Hawthorne Effect? When participants know they are part of an experiment and their behavior changes.
What is Hypothesis testing?
Created by: MilaB23
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