Across
- 5. a bell shaped curve that is symmetric about the mean
- 6. a variable whose value is determined by the outcomes of a probability experiment
- 7. the normal distribution with the mean of 0 and standard deviation of 1
- 9. the collection of all the data
- 12. a function that givers the probability of each possible value of a random variable
- 14. the number of standard deviations the x-value lies below or above or below the mean
- 16. observes individuals and measures variables without controlling the individuals or their environment
- 19. prejudice in favor or agains one thing, person, or group, usually compared to another
- 20. members of a population can volunteer to be in the sample
- 21. an investigation of one or more characteristics of a population
- 23. imposes a treatment on individuals in order to collect data on their response to the treatment
- 24. a population is divided into smaller groups that share a similar characteristic
Down
- 1. only members of a population who are easy to reach are selected
- 2. a rule used to select members of a population
- 3. one type of a probability distribution
- 4. a sample that overrepresent or under represents part of the population, not a fair sample
- 8. a population is divided into groups, called clusters. All of the members in one or more of the clusters are selected
- 10. a numerical description of a population characteristic
- 11. a representative of the population without any predetermined opinions, a fair sample
- 13. a numerical description of a sample characteristic
- 15. each member of a population has an equal chance of being selected
- 17. questions that are favored and flawed in a way that leads to inaccurate results
- 18. a subset of a population
- 20. uses a model to reproduce the conditions of a situation or process so that the simulated outcomes closely match the real world
- 22. a claim about a characteristic of a population