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16 Cards in this Set
- Front
- Back
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What is Statistics? |
Statistics is the science of data. This involves collecting, classifying, summarizing, organizing, analyzing, presenting, and interpreting numerical information. |
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What is data? |
Data is the collected information used for study. |
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The application of statistics can be divided in to two broad areas; what are they? |
Descriptive Statistics & Inferential Statistics |
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What is descriptive statistics? |
Descriptive statistics utilizes numerical and graphical methods to look for patterns in a data set, to summarize the information revealed in a data set, then to present the information in a convenient format. |
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What is inferential statistics? |
Inferential statistics utilizes sample data to make estimates, decisions, predictions, or other generalizations about a larger set of data. |
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Another name for Florence Nightingale. |
"Passionate Statistician" |
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What is an experimental unit? |
An experimental (observational) unit is an object (person, thing, transaction, or event) about which we collect data. |
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What is a population? |
A population (N) is a set of units (usually people, objects, transactions, or events) that we are interested in studying. |
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What is a variable? |
A variable is a characteristic or property of an individual experiment (or observation) unit in the population. |
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What is a sample? |
A sample is a subset of the units of a population. |
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What are the 4 Elements of Descriptive Statistical Problems? |
1. The population or sample of interest. 2. One or more variables (characteristics of population) 3. Tables, graphs, or numerical summary tools. 4. Identification of patterns in the data |
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What are the 5 Elements of Inferential Statistical Problems? |
1. The population of interest. 2. One or more variables that are to be investigated. 3. The sample of population units. 4. The inference about the population based on information of sample. 5. A measure of the reliability of the inferences. |
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What is Quantitative Data? |
Quantitative data are measurements that are recorded on a naturally occurring numerical scale. (interval data, or ratio data) |
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What is Qualitative? |
Qualitative data or categorical data are measurements that cannot be measured on a natural numerical scale; they can only be classified into groups of categories. |
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What is a designed experiment? |
A design experiment is a data collection method where the researcher exerts full control over the characteristics of the experimental units sample. These experiments usually involve treated and untreated groups. |
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What is a observational study? |
An observational study is a data collection method where the experimental units sample are observed in their natural settings. No attempt is made to control the characteristics of the units. |
