Flashcards
Stats Chapter One
Flashcards do conjunto (26)
- 1statisticsa collection of procedures and principles for gathering and analyzing data
- 2descriptive statisticsmethods of organizing, summarizing, and presenting data
- 3inferential statisticsmethods used to draw conclusions about characteristics of a population based on sample data
- 4populationthe group of all items of interest in a study
- 5censusthe collection of data drawn from the population
- 6samplea set of data drawn from the population. A subset of the population
- 7parametera descriptive measure of a population
- 8statistica descriptive measure of a sample
- 9statistical inferencethe process of making an estimate, prediction, or decision based on sample data
- 10The fundamental rule for using data for inferencedata can be used to make inferences about a population if the sample data can be considered representative with regard to the population
- 11target populationthe population about which we would like to draw inferences
- 12sampled populationthe actual population from which we would like to draw inferences
- 13sampled populationthe actual population from which the sample has been taken
- 14observational studiesresearchers observe or question participants
- 15categorical dataresults from a variable that asks for a quality type. Identified by non-numeric descriptions (labels or names) or by numeric codes
- 16quantitative dataresults from obtaining quantities (counts or measurements)
- 17nominal scale (categorical data)labels with no order implied
- 18ordinal scale (categorical data)data can be ordered
- 19interval scale (quantitative data)the difference between two values is expressed in terms of a fixed unit of measure, but the ratio of two values is not meaningful
- 20ratio scale (quantitative data)the ratio of two values is meaningful
- 21cross-sectional datadata collected at the same or approximately the same point in time
- 22time series datadata collected over several time periods
- 23business analyticsthe scientific process of transforming data into insight for making better business decisions
- 24descriptive analyticsthe set of analytical techniques that describe what has happened in the past or is currently occurring
- 25predictive analyticstechniques that use models constructed from past data to predict the future or to assess the impact of one variable on another
- 26prescriptive analyticstechniques that yield a course of action
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- FlashCards sobre Stats Chapter One, criado por cassie levy em 20-01-2024.
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- cassie levy
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