Chapter 1- Data Analysis Flashcards
Terms : Hide Images [1]
| 2959325183 | Ways to collect data | samples, experiments, simulations | 0 | |
| 2959327420 | Variable | a characteristic | 1 | |
| 2959329398 | Case or Unit | individuals that there is a variable for | 2 | |
| 2959333094 | Quantitative Variables | numerical and it makes to do numerical operations | 3 | |
| 2959337323 | Discrete Variable | countable, always whole numbers | 4 | |
| 2959349772 | Continuous Variable | not countable, values are at an interval | 5 | |
| 2959355502 | Population | total number of individuals you are collecting data about | 6 | |
| 2959357320 | Sample | sublet of the population | 7 | |
| 2959361216 | Parameter | a characteristic of the population | 8 | |
| 2959371984 | Statistic | a characteristic of the sample | 9 | |
| 2959371985 | Mean | arithmetic average | 10 | |
| 2959376395 | Explatatory Variable | X (independent) | 11 | |
| 2959383499 | Response Variable | Y (dependent) | 12 | |
| 2959387542 | Observational Study | collection of data without inferring | 13 | |
| 2959389434 | Experiment | imposing a treatment (looking for causal relationships) | 14 | |
| 2959392398 | Census | data from the entire population | 15 | |
| 2959393620 | Confounding Variable | another variable that could affect your outcome | 16 | |
| 2959396505 | Bias | excludes a group of individuals | 17 | |
| 2959399382 | Undercoverage | leaving out a portion of of the population | 18 | |
| 2959403218 | Non-Response | those being surveyed don't answer | 19 | |
| 2959405731 | Response Bias | responding in the way you think the surveyor wants you to respond | 20 | |
| 2959411528 | Poor Wording | confusing or leading question | 21 | |
| 2959415072 | Randomization | key to minimizing bias | 22 | |
| 2959419476 | Convenience Sample | picking those most convenient (proximity); not random | 23 | |
| 2959423751 | Voluntary Response Sample | volunteer to be apart of a sample; usually people have negative opinions | 24 | |
| 2959431179 | Systematic Sample | when you follow a system to get data; every nth person | 25 | |
| 2959435471 | Simple Random Sampling (SRS) | each unit has an equal chance of being selected, and each group of n individuals has the same chance of being selected; can get tedious, can undercover | 26 | |
| 2959447909 | Stratified Random Sampling | divide group into strata (like individuals) and randomly sample each strata; minimizes undercoverage | 27 | |
| 2959455250 | Cluster Sample | randomly selected clusters of the same individuals, interviewing everyone in the cluster | 28 | |
| 2959463440 | Multiusage Sample | two or more sampling methods together; done mainly by corporations | 29 |