BST 322 Final EXAM TEST ANSWERS 100% verified(REVISED)

This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. - ANSWER Fisher's exact test It is important to assess the magnitude or strength of a relationship because this assists you with deciding whether or not a variable A causes variable B. True or False - ANSWER False A Z score of +/-1.96 is equivalent to these values on a normal distribution. - ANSWER +/-2 standard deviations When examining the relationship between two interval or ration level variables, you can use a scatterplot to allow you to visualize the relationship between the two. True or False - ANSWER True This term refers to how data spreads out or disperses within a distribution. - ANSWER Variability A perfect negative relationship between two variables is expressed as r=0. True or False - ANSWER False The arithmetic average of the data is called the: - ANSWER Mean Public Health nurses want to compare the mean weight of US 6th graders to a sample of 6th graders in one school. Which statistical test is most appropriate - ANSWER One sample t-test Psych nurses wanted to evaluate the effect of three different treatments for anxiety - positive imagery, therapeutic touch, and medication on anxiety score (interval data) while controlling for the effect of length of stay. Which test is most appropriate? - ANSWER ANCOVA