Descriptive and Inferential Statistics, Exams of Nursing

Download Descriptive and Inferential Statistics and more Exams Nursing in PDF only on Docsity! Descriptive and Inferential Statistics A(n) __________ refers to a specific factor that has a range of possible values. A. hypothesis B. method C. variable D. observation - correct answer ✔✔c The difference between the largest and smallest variable score in a set of data is the __________. A. range B. standard deviation C. median D. mode - correct answer ✔✔a __________ is an example of a directional research hypothesis. A. "Happiness level varies by age" B. "Car color affects the number of traffic tickets given" C. "The amount of television watched affects grades" D. "Males report higher marital satisfaction than females" - correct answer ✔✔d? What is used to analyze sample data in order to make conclusions about a population? A. hypotheses B. ranges C. inferential statistics D. standard deviations - correct answer ✔✔c A statistical analysis used to examine the influence of one variable on another is __________. A. correlation B. regression C. description D. comparison - correct answer ✔✔b When psychologists refer to the relationships between variables, they are referring to ___________. A. correlation B. attitudes, or emotions. Specific examples of variables such as age, height, depression, exercise habits, and self-esteem are also acceptable. Explain why researchers cannot claim causation when examining the relationship between variables. - correct answer ✔✔Researchers cannot claim that one variable causes another because they are not entirely sure which variable impacts the other when examining the relationship between them. Researchers also do not know for sure how many unknown or untested variables influence another variable. Therefore, claiming that one variable causes another would be inaccurate. Compare and contrast correlation and regression. - correct answer ✔✔Both correlation and regression are used in inferential statistics as types of correlational analysis, which looks at the relationships between variables. However, correlation is used only to determine if a relationship between variables exist, whereas regression is used to determine if one variable influences another or to predict variable outcomes. Compare and contrast measures of central tendency and measures of variability. - correct answer ✔✔Measures of central tendency and measures of variability are both components of descriptive statistics and provide information about data sample scores. However, measures of central tendency provide information about the summary of data scores as represented by the mean, median, and mode. Measures of variability, such as the range and standard deviation, provide information on how far scores are spread out or vary through a distribution. A specific factor having a range of possible values is a __________. A. variable B. mean C. median D. mode - correct answer ✔✔a The average distance between the variable scores and the mean in a set of data is the __________. A. range B. standard deviation C. mean D. median - correct answer ✔✔b Descriptive statistics is used in order to analyze the relationship between variables. t/f? - correct answer ✔✔false? Standard deviation refers to the __________. A. statistics used to organize, summarize, and describe sample data B. value within a given set of data in its original form C. average distance between variable scores and the mean in a set of data D. difference between the largest and smallest variable scores in a set of data - correct answer ✔✔c Correlational research results depicting a correlation coefficient of 0.5 means that the associated variables demonstrate a __________ relationship. A. weak negative B. moderately positive C. weak positive D. strong positive - correct answer ✔✔b? The range and standard deviation of a distribution are __________. A. measures of central tendency B. measures of variability C. types of transformed scores D. types of percentiles - correct answer ✔✔b Statistics used to analyze sample data in order to make conclusions about a population are called __________ statistics. A. nondirectional B. directional C. inferential D. descriptive - correct answer ✔✔c? A research study that produces a correlation coefficient of -0.90 indicates __________ relationship between variables. A. a medium positive B.