Terms : Hide Images
| 13894160716 | stratified sampling | a variation of random sampling; the population is divided into subgroups and weighted based on demographic characteristics of the national population | 0 | |
| 13894174600 | cluster sampling | A probability sampling technique in which clusters of participants within the population of interest are selected at random, followed by data collection from all individuals in each cluster. | 1 | |
| 13894179747 | systematic sampling | select some starting point and then select every kth element in the population | 2 | |
| 13894184059 | simple random sample | every member of the population has a known and equal chance of selection | 3 | |
| 13894188663 | convinience sampling | what comes easiest to the observer/recorder | 4 | |
| 13894193268 | experiment | a set of controlled observations that test the hypothesis | 5 | |
| 13894196755 | Observation | the action or process of observing something or someone carefully or in order to gain information. | 6 | |
| 13894200645 | non-response bias | bias introduced to a sample when a large fraction of those sampled fails to respond | 7 | |
| 13894210526 | standard deviation | a computed measure of how much scores vary around the mean score | 8 | |
| 13894216559 | Outlier | A value much greater or much less than the others in a data set | 9 | |
| 13894220681 | inter-quartile range | Q3-Q1 | 10 | |
| 13894223797 | sampling distribution | the distribution of values taken by the statistic in all possible samples of the same size from the same population | 11 | |
| 13894228155 | Empirical Rule | 68%, 95%, 99.7% | 12 | |
| 13894232002 | Randomization | a process of randomly assigning subjects to different treatment groups | 13 | |
| 13894232003 | control group | In an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment. | 14 | |
| 13894237101 | treatment group | the participants in an experiment who are exposed to the level of the independent variable that involves a medication, therapy, or intervention | 15 | |
| 13894241494 | type one error | Accepting the experimental hypothesis when the results are down to chance/fluke | 16 | |
| 13894241495 | type two error | NOT rejecting null hypothesis when in fact we should have rejected it - a false negative | 17 | |
| 13894247546 | lurking variable/confounding variable | a variable that can affect the interpretation of relationships between variables | 18 | |
| 13894266559 | Replication | repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding extends to other participants and circumstances | 19 | |
| 13894266560 | Blocking | arranging of experimental units in groups that are similar to one another | 20 | |
| 13894277126 | power test | The probability of correctly detecting a false null hypothesis | 21 | |
| 13894282523 | Parameter | (n.) a determining or characteristic element; a factor that shapes the total outcome; a limit, boundary | 22 | |
| 13894286533 | statistic | a numerical measurement describing some characteristic of a sample | 23 | |
| 13894286534 | mutually exclusive | Events that cannot occur at the same time. | 24 | |
| 13894291133 | independent | free from outside control; not depending on another's authority. | 25 | |
| 13894295944 | Population | group of individuals of the same category | 26 | |
| 13894303484 | Sample | a subset of the population | 27 |
