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27 Cards in this Set
- Front
- Back
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Descriptive statistics
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____________ is the term given to the analysis of data that helps describe, show or summarize data in a meaningful way such that, for example, patterns might emerge from the data ex. Min, mean, max, etc. |
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Statistics
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and it is a way of reasoning. |
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Types of Data
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Data Warehouses, transactional data, big data, and data mining are all _____________. |
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physical places
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data warehouses are _______________
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transactional data
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________________ is data that can be observed
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data mining
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______________ is predictive analytics used to find relationships
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Business Analytics
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_______________ is any use of data and statistical analysis such as predictive and descriptive. |
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predictive analysis
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________________ tries to predict future transactions. |
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descriptive analysis
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____________ tries to describe populations using samples. |
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variations, business decisions
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Understanding _____________ is essential to making ________________. |
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Who?
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the ________________ of data contexts is the population of interest.
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What?
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the ________________ of data contexts that is: what is the variable?
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Why?
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the ________________ of data contexts is: Why are you doing the study? What do you want to determine? and the problem at hand.
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Qualitative and Quantitative
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the types of variables are __________ and _______________. |
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Qualitative
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_______________ variables are categorical (can be put into categories) and descriptive.
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Quantitative
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______________ variables are numerical and have scatterplot values. |
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nominal
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Data is ________________if there is no natural order between the categories (eg eye colour)
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ordinal
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Data is _____________ if an ordering exists (eg exam results, socio-economic status)
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Cross Sectional Data
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________________ is data collected at 1 moment in time. |
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Times Series Data
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_________________ looks at data over time and it could help forecast future sales. |
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Inferential Statistics
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________________ is statistics when we use a sample to make decisions and draw conclusions to prove a point.
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Surveys, Meta Data, observational (transactional), and experiments
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_______________, _______________, ________________, and ______________ are all ways to collect data. |
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respondents
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_____________ are people who answer survey's.
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participants
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____________ people who participate in an experiment.
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experimental units
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____________________ are animals, plants, and websites. |
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Relational database
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_______________- is 2 or more data tables related so the information can spread across them |
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Identifier variables
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_________________ are key codes such as the code (CSE). |
