Math Vocabulary

2. a sampling distribution where members volunteer to participate
5. a method of data collection that imposes a treatment on individuals to collect data on their response to the treatment
6. a sampling distribution where members are chosen because they are easily accessible
9. the average distance numbers in the dataset are away from the mean, found by taking the square root of the variance
10. sample a sampling distribution where the population is first divided into groups. Then members are randomly chosen from each group
14. the difference between the third and first quartile
15. a sampling distribution where members are chosen using a pattern, such as selecting every other person

1. a sampling distribution where the population is first divided into groups. Then a sample of groups is randomly chosen and all members of the chosen groups are surveyed
2. a sampling distribution where members are chosen using a method that gives everyone an equally likely chance of being selected
3. the middle number in the dataset, 50% of numbers are greater than or equal to this number and 50% of numbers are less than or equal to this number
4. the value that occurs the most in a dataset
7. a method of data collection where one observes individuals and measures variables without controlling the individuals or their environment in any way
8. a relation where every input has exactly one output
11. The average of the squared differences from the mean
12. average found by adding all numbers in dataset up and then dividing by number of numbers
13. the difference in the largest and smallest values in the dataset