Nursing, Epidiomology and Statistics Select the correct answer from…Nursing, Epidiomology and Statistics Select the correct answer from…

Question Answered step-by-step Nursing, Epidiomology and Statistics Select the correct answer from… Nursing, Epidiomology and Statistics Select the correct answer from the multiple choice question below 1 to 25: Question 1                                        The best definition of epidemiology is:a. The?study?of the distribution and determinants of health-related states and events in specified populationsb. The science that explains and reports the etiology of illness and injury c. A public health process that focuses on community priorities d. The practice or science of collecting and analyzing numerical data relating to living organisms  Question 2                          The best definition of statistics is:a. The?practice or science of studying?the data distribution and determinants of health-related states and events in specified populations  b. The practice or science of collecting and analyzing numerical data for the purpose of describing or inferring a whole population using a representative sample c. The?practice or science of using data to make decisions about the research design and to obtain answers to research questions d. The practice or science of collecting and analyzing numerical data relating to living organisms  Question 3                            All the following statements about descriptive statistics are true except:  a. Summarize a given data set, which can be either a representation of the entire population or a sample of a population b. Include measures of frequency, central tendency, dispersion, and position c. Utilize data from a sample and extrapolate about the larger population from which the sample was drawn Examples of variables commonly used in descriptive statistics include race/ethnicity, education, and gender.  Question 4                           All the following statements about inferential statistics are true except:  a. Inferential statistics utilize data from a sample and makes inferences about the larger population from which the sample was drawn. b. Are used to reject or fail to reject the null hypothesis c. Are based on the laws of probability d. Typically include both qualitative and quantitative variables Bottom of Form Question 5                          Which of the following hypotheses is worded as an example of a null hypothesis? a. The mean anxiety score for the experimental group is the same as the mean anxiety score for the control group.b. The mean anxiety score for the experimental group will be less than the mean anxiety score for the control group.Question 6                                      Which of the following hypotheses is worded as an example of an alternative hypothesis?a. The mean wound healing time of the experimental group will be different from the mean wound healing time in the usual care (comparison) group.b. There will be no difference in mean wound healing time between the experimental and usual care (comparison) groups.Question 7               The alternative hypothesis described in question 6 is a:a. One-sided (one-tailed) hypothesis b. Two-sided (two-tailed) hypothesisQuestion 8                           A dependent variable is what happens because of the independent variable(s). a. Trueb. FalseQuestion 9                          The major types of quantitative data are string (word), nominal/categorical, ordinal, interval, and ratio. a. Trueb. FalseQuestion 10                          Select the nominal dichotomous variable(s): a. Hair color (blonde, brunette, red, black) b. Education level (primary, middle school, high school) c. Health (diabetic, not diabetic)d. All the above are dichotomous variables Bottom of FormQuestion 11                          Select the ordinal (rank order) level variable(s): a. Health status (poor, fair, good, excellent) b. Education level (primary, middle school, high school) c. Weight in pounds d. A and Be. A, B and C Select the interval (continuous) level variable(s): a. HgA1c grams %  b. Satisfaction (high, medium, low)c. Hair color (black, blonde, brown, red) d. B and Ce. A, B, and C Question 13              The major difference between interval and ratio level data is that ratio level data includes a measure of true 0 (zero). a. Trueb. FalseQuestion 14              Measures of central tendency include the mean, median and mode. The mean is defined as  a. The most frequently occurring value b. The value that is in the middle of the distribution c. The arithmetic average of the distributionAll the above Question 15              Select the measure of central tendency that it is appropriate to report when exploring interval/ratio level data. a. Mean b. Medianc. Moded. All the above are appropriate to report.Question 16              Measures of dispersion include range, interquartile range (IQR), variance, and standard deviation (SD). a. Trueb. FalseQuestion 17Measures of dispersion are reported with measures of central tendency. a. Trueb. FalseQuestion 18The normal distribution is a probability distribution used to answer questions about the likelihood of getting a particular outcome when sampling from a population. Characteristics of the normal distribution include all the following except: a. It is bell-shaped.b. The mean, median, and mode are equal.c. It is symmetrical about the mean.d. The baseline of the normal curve is measured in interquartile range (IQR) units.Question 19              The alpha-level:a. Is the probability of making a Type I error (the null hypothesis is rejected when it is true)b. Is the probability of making a Type II error (the null hypothesis is NOT rejected when it is false) c. Indicates the power of a study to detect a statistically significant difference d. Is the probability that the results were obtained by chance alone Question 20              The p-value:a. Is the probability of making a Type II error (the null hypothesis is NOT rejected when it is false) b. Indicates the power of a study to detect a statistically significant difference c. Is the probability that the results were obtained by chance aloned. Tells us the relative position of a given score in relation to other scores in a distribution Question 21              When calculating arithmetic mean values, we know that there are usually a range of values. Additionally, we know that extreme values arise, especially when we are reporting mean values. We can be confident in our result by calculating a Confidence Interval (CI). What is the most commonly calculated CI? a. 80% b. 95%c. 75% d. 5% Question 22                     The sampling plan (probability or nonprobability) and sample size of a research study have little effect on the validity of the results of the study. a. Trueb. FalseQuestion 23             Research bias is a systematic error in study design, subject recruitment, data collection, or analysis that results in a mistaken estimate of the true population parameter. a. Trueb. FalseQuestion 24             Assume that the study participants constitute an independent random sample that is adequate in size and normally distributed. A commonly used analytic technique to determine the difference between two groups on an outcome of interest is which of the following?A paired t-test An independent t-testAn analysis of variance (ANOVA) Linear regression Cross-tabulation with chi-square Question 25              Assume that the study participants constitute an independent random sample that is adequate in size and normally distributed. A commonly used analytic technique to determine the difference between three or more groups on an outcome of interest is which of the following?A paired t-test An independent t-test An analysis of variance (ANOVA)Linear regression                          Health Science Science Nursing NURS 544 Share QuestionEmailCopy link Comments (0)