A It has the assumption of a normal distribution B It is a parametric test C It

# A it has the assumption of a normal distribution b it

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A. It has the assumption of a normal distribution B. It is a parametric test. C. It is used for two nominal variables page 587 Question 15 5 / 5 pts A group of 15 nurses was asked which of two types of coffee they preferred. Seven of the nurses preferred the first type, while eight of the nurses preferred the second type. Which statistical test would be appropriate to determine differences in these two groups? A. Chi-square B. paired t -test C. parametric test page 587 Question 16 5 / 5 pts Descriptive statistics should be reported in every study for which of the following reasons? A. To determine validity B. As an indication of reliability C. To show the sample characteristics D. To provide a powerful analysis of data page 550
Question 17 5 / 5 pts When there is an outlier in the data set, which measure of central tendency is effected the most? A. Mode B. Median C. Mean page 553 Question 18 5 / 5 pts Which of the following measures is the most helpful both for providing a quantification of dispersion and for providing a way to interpret how far away from the mean each individual score is? A. Range B. Difference scores C. Magnitude D. Standard deviation page 554 Question 19 5 / 5 pts The statistical procedure most commonly used for prediction is _____________. A. Chi-square test of independence B. t -test C. standard deviation D. regression analysis page 570
Question 20 5 / 5 pts A researcher collects a nationally based set of data about cholesterol levels and age at first circulatory incident (myocardial infarction or cerebrovascular accident). The researcher performs a linear regression analysis to find out all of the following except: A. Estimate the age at which circulatory incidents are likely to occur, given the cholesterol level. B. Determine whether there is a linear relationship between cholesterol levels and circulatory incidents. C. Determine if there are differences between the cholesterol levels and the number of circulatory incidents. Calculate the strength of the relationship between cholesterol levels and circulatory incidents. page 571

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• Summer '19
• Statistics, researcher, Statistical significance