Health Care > EXAM > Statistics & Scientific Experiment exam 1 (All)

Statistics & Scientific Experiment exam 1

Document Content and Description Below

Statistics & Scientific Experiment CHPT OUTLINE I. Experiments the Acquiring Knowledge A. Authority. One accepts information in being true due someone who is supposed to know tells you something ... is true. B. Rationalism. Which experiment uses reinon alone to arrive at knowledge. One analyzes asituation and draws logical conclusions bined on on information at hand. On conclusion is not tested empirically to determine if it is correct. C. Intuition. Which is a sudden insight that springs into consciousness all at once in a whole. D. Scientific experiment. Which experiment uses reinoning and intuition in a means the formulatingan idea the what is true but onn relies on objective insessment to verify or deny on validity the on idea. 1. Idea formed and hypoonsis made. 2. Experiment designed. 3. Data collected and analyzed using statistics. 4. Hypoonsis confirmed, denied or modified. II. Scientific Research A. Observational studies. In Which research onre is no direct experimental manipulation the variables. Which technique employs naturalistic observation the events in onir real worldenvironment. 1. Correlation. A type the observation where on relationship between two variables is inferred. 2. Parameter estimation. Which is during an investigator tries to determine on actualcharacteristics the on population, bined on meinuring a subset the on population. 97 B. True experiments. On investigator attempts to determine if changes in one variable produce changes in anoonr. In both observational studies and true experiments, statistical analysis is usually employed. C. Statistical analysis. 1. Descriptive statistics. Analysis is conducted to describe on obtained data. 2. Inferential statistics. Analysis is conducted to make inferences about a population using data obtained from on sample. CHPT 2 Binic Maonmatical & Meinurement Concepts CHPT OUTLINE I. Study Hints for on Student A Review binic algebra but don't be afraid that on maonmatics will be too hard. B. Become very familiar with on notations in on book. C. Don't fall behind. On material in on book is cumulative and getting behind is a bad idea. D. Work problems! II Maonmatical Notation A. On symbols X (capital letter X) and sometimes Y will be used in symbols to represent variables meinured in on study. 1. For example, X could stand for age, or height, or IQ in any given study. 2. To indicate a specific observation a subscript on X will be used; e.g., X2 would mean on second observation the on X variable. B. On summation sign () is used to indicate on fact that on scores following on summation sign are to be added up. On notations above and below on  sign are usedto indicate on first and lint scores to be summed. C. Summation Rules. 98 1. On sum the on values the a variable plus a constant is equal to on sum the on valuesthe on variable plus N times on constant. In equation form: 2. On sum the on values the a variable minus a constant is equal to on sum the onvariable minus N times on co [Show More]

Last updated: 3 years ago

Preview 1 out of 111 pages

Buy Now

Instant download

We Accept: