bst322 final exam questions and answers (verified for accuracy)

Information collected in a numerical form is called quantitative Which measure of central tendency is at the highest point on a graph? mode Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen Brainpower Read More Correlation coefficient tests allow you to determine if a cause and effect relationship is present. false Data that are categorical but can be rank-ordered in a meaningful way are called: ordinal If the mean is to the left of the median, what is true? The distribution is negatively skewed. Which measure of variability is used most often in conjunction with the mean? standard deviation A variable with equal distances between score units which also has a true meaningful zero is: ratio When calculating a Pearson's correlation coefficient, it is necessary that both variables have approximately normal distributions. True In a study that examines the effect of a peer mentor on the emotional status of patients, what is the dependent variable? emotional status Which quartile has the same value as the median? 50% The third quartile is: the point below which 75% of the scores lie. Statistics that allow for inferences to be made about a population from the study of a sample are known as: inferential What is the best description of the distribution below? __/_ leptokurtic The variable "Group assignment" is an example of what level of measurement? nominal 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 The variable "religion" is an example of what level of data? nominal The standard deviation is: the square root of the variance The variable "miles per hour" is an example of what level of data: ratio What percent of the children in the study are Hispanic? 19% (in quiz's chart) The mean and the mode are always the same for a dataset of over 10 values. false 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 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. 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