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prob/stats ch1


Variable A characteristic or attribute that can assume different values
Data The values the variables asume
Random Variable Variables whose values are determined by chance
Data Set A collection of data values
Data Value- Datum Each value of data set
Probability The chance of an event occuring
Population Consists of all subjects that are being studied
Sample A group of subjects selected from a population
Hypothesis Testing A decision-making process for evaluating claims about a population based on information from samples
Independent Variables (Exploratory)
Dependent Event (outcome, Resultant)
True vs. Quasi Experiments
Confounding Variable
Hawthorne Effect
Control Group
Treatment Group
Margin of Error
Margin of Error Interval
Biased Question
Unbiased Question
Sequential Sampling
Double Sampling
Multistage Sampling
Define Statistics The science of conducting studies to collect, organize, summarize, analyze, and draw conclusions from data
3 Examples of how statistics are used in everyday life
3 reasons to study statistics
Example of Descriptive Statistics
Examples of Inferential Statistics
find boundaries of 1.6 1.55- 1.65
Nominal Example
Ordinal Example
Interval Example
Ratio Example
2 purposes of data collection
3 ways to collect data
Advantage and disadvantage of Telephone Surveys
Advantage and disadvantage of Mailed Questionnaire
Advantage and disadvantage of Personal Interviews
Example of Random Sampling
Example of Systematic Sampling
Example of Stratified Sampling
Example of Cluster Sampling
Example of Observational study
Example of Experimental Study
2 advantages and 2 disadvantages of Observational studies
2 advantages and 2 disadvantages of experimental studies
5 uses of statistics
7 misuses of statistics
Created by: mkal