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BST 322 Exam with accurate detailed solutions

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BST 322 Exam with accurate detailed solutions

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BST 322

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BST 322 Exam with accurate detailed ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\|||




solutions

When calculating a Pearson's correlation coefficient, it is necessary that both variables have
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approximately normal distributions. - correct answer✔✔True ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\|||




The variable "Group assignment" is an example of what level of measurement? - correct
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answer✔✔Nominal



Statistics that allow for inferences to be made about a population from the study of a sample
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are known as: - correct answer✔✔Inferential
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Which measure of variability is used most often in conjunction with the mean? - correct
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answer✔✔Standard deviation ||/|\|||




Data that are categorical but can be rank-ordered in a meaningful way are called: - correct
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answer✔✔Ordinal



The variable "religion" is an example of what level of data? - correct answer✔✔Nominal
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The standard deviation is: - correct answer✔✔The square root of the variance
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In a study that examines the effect of a peer mentor on the emotional status of patients,
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what is the dependent variable? - correct answer✔✔Emotional status
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, The variable "miles per hour" is an example of what level of data: - correct answer✔✔Ratio
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Information collected in a numerical form is called: - correct answer✔✔Quantitative ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\|||




Which measure of central tendency is at the highest point on a graph? - correct
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answer✔✔Mode



The measure of central tendency that is the point at which half the scores fall above and half
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the scores fall below is the: - correct answer✔✔Median
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The mean and the mode are always the same for a dataset of over 10 values. - correct
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answer✔✔False



If the mean is to the left of the median, what is true? - correct answer✔✔The distribution is
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negatively skewed. ||/|\|||




A variable with equal distances between score units which also has a true meaningful zero
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is: - correct answer✔✔Ratio
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The third quartile is: - correct answer✔✔the point below which 75% of the scores lie.
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Which quartile has the same value as the median? - correct answer✔✔50% ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\|||




Correlation coefficient tests allow you to determine if a cause and effect relationship is ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\|||




present. - correct answer✔✔False ||/|\||| ||/|\||| ||/|\|||




A study in which a set of patients are tested for pain level before and after being given a new
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pain medication would use which test? - correct answer✔✔Dependent t-test
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