BST322 Final Exam 2025

1. Information collected in a numerical form is called - quantitative 2. Which measure of central tendency is at the highest point on a graph? - mode 3. Correlation coefficient tests allow you to determine if a cause-and-effect relationship is present. - false 4. Data that are categorical but can be rank-ordered in a meaningful way are called: - ordinal 5. If the mean is to the left of the median, what is true? - The distribution is negatively skewed. 6. Which measure of variability is used most often in conjunction with the mean? - standard deviation 7. A variable with equal distances between score units which also has a true meaningful zero is: - ratio 8. When calculating a Pearson's correlation coefficient, it is necessary that both variables have approximately normal distributions. - True 9. In a study that examines the effect of a peer mentor on the emotional status of patients, what is the dependent variable? - emotional status 10. Which quartile has the same value as the median? - 50% 11. The third quartile is: - the point below which 75% of the scores lie. 12. Statistics that allow for inferences to be made about a population from the study of a sample are known as: - inferential 13. What is the best description of the distribution below? /_ - leptokurtic 14. The variable "Group assignment" is an example of what level of measurement? - nominal 15. The measure of central tendency that is the point at which half the scores fall above and half the scores fall below is the: - median 16. The variable "religion" is an example of what level of data? - nominal 17. The standard deviation is: - the square root of the variance 18. The variable "miles per hour" is an example of what level of data: - ratio 19. What percent of the children in the study are Hispanic? - 19% (in quiz's chart) 20. The mean and the mode are always the same for a dataset of over 10 values. - false 21. If you wanted to test a set of patients' responses to a given therapy at 1, 3, and 6 months, you would use which statistical test? - Repeated measures ANOVA 22. Nurse researchers hypothesized that the use of therapeutic touch would reduce anxiety levels in pre-op hip replacement patients. The null hypothesis would be: - Therapeutic touch does not reduce anxiety levels in pre-op hip replacement patients. 23. If you wanted to compare the effect of 3 separate kinds of interventions (3 separate groups of one independent variable -the intervention type) on a single dependent variable, the appropriate test would be: - One-way ANOVA 24. If a researcher rejects a null hypothesis when that hypothesis is actually true, he has committed: - a type I error 25. When the alternative hypothesis states that the difference between two groups can only be in one direction, we call this a: - One-tailed test 26. What does it mean if your test result is "statistically significant"? - It is unlikely that the results occurred by chance alone.