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1.3
Data Quality and Management
| Question | Answer |
|---|---|
| Outliers create this type of error | Out-of Range |
| Unpredictable error | Random Error – No correlation |
| Error may occur from missing data. (Example: Space not filled in) | Omission Error – Distorted results |
| This error repeats itself | Systematic Error – Skewed results |
| Observation points that are distant from other observations. | Outliers Note: Can be included or excluded in analysis (causes skewness) |
| Types of Bias: Bias that occurs from not selecting a random sample | Measurement bias |
| Types of Bias: Bias introduced because respondents believe it will be beneficial if selected. | Conscious bias (key word: benefit) |
| Consistent and repeatable data | Reliable |
| Resulting from accurate measurements | Valid data |
| If a responder lies on their survey, this creates what type of bias? | Information |
| Sorting your spreadsheet can expose these errors by moving them to the very top or the very bottom of the column | Omission or Out-of-Range |
| An error that will fix itself over time | Random |
| An error that will not fix itself. You must do something | Systematic |
| Cleaning and organizing data | Data Management |
Created by:
mgallo3
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