| A | B |
|---|
| Measures of Central Tendency | mean, median and mode |
| Outlier | extremely high or low value compared with other data |
| Histogram | bar graph |
| Range | difference between maximum and minimum values |
| Mean | average of data values |
| Median | middle value of an ordered list |
| Mode | most frequent data value(s) |
| Frequency | number of occurrences of a data value |
| Box-and-Whisker Plot | Graph showing quartiles of data |
| Quartile | divided into 4 groups |
| Standard deviation | average difference from mean |
| Five-number summary | median, min, max, and quartiles |
| Inter-Quartile Range | difference between Q3 and Q1 |
| Range | difference between MAX and MIN values |
| normal distribution | a bell-shaped curve |
| observational study | Individuals are observed and no attempt is made to influence the results |
| experiment | something is intentionally done to people, animals, or objects, and then the response is observed |
| survey | Collecting information from a population or a sample of the population |
| bias | questions that favor certain outcomes |
| unbiased | questions that are random, or not based on any predetermined characteristics of the population |
| positively skewed distribution | majority of data on LEFT of mean |
| negatively skewed distribution | majority of data on RIGHT of mean |
| symmetrical distribution | data are EVENLY distributed on both sides of mean |
| statistics | study of the collection, analysis, and interpretation of data |
| sample | a subset of the population selected at random |
| population | all members living in a particular area |
| Treatment Group | the group given the treatment in an experiment |
| control group | the group given the placebo, or false treatment in an experiment |
