descriptive correlational research design ppt

Through a prediction equation (see p. 585), researchers use a predicted score and an index of prediction error (standard error of estimate) to conclude if the score is likely to be incorrect. Investigates the possibility of relationships between two variables. Boasting an impressive range of designs, they will support your presentations with inspiring background photos or videos that support your themes, set the right mood, enhance your credibility and inspire your audiences. The most commonly used inference test is a t-test for differences between means. Correlational studies describe the variable Correlational studies describe the variable relationship via a correlation coefficient, (A) (B) (C) r = +1.00 r = -1.00 r = 0 X Y X Y X Y 5 5 5 1 2 1 4 4 4 2 5 4 3 3 3 3 3 3 2 2 2 4 1 5 1 1 1 5 4 2 Three Sets of Data Showing Different Directions and Degrees of Correlation(Table 15.1). c\# 7 ppt/slides/_rels/slide1.xml.relsj0=wW;,e)C>!mQ[:o1tx_?],(AC+lt>~n_'\08c 1\0JhA1Q!K-_I}4Qg{m^0xKO;-G*|ZY#@N5 PK ! Descriptive Research DesignCross-Sectional Design Also called Survey,Prevalence, Incidence,Epidemiologic Studies Diagnose or stage adisease Analyze data collectedon a group at one time period - Subject and information obtained in a short time frame Usefulness of new orcurrent diagnosticprocedures What is happening Establishing norms The variable that is used to make the prediction is called the predictor variable. 0]&AD 8>\`\fx_?W ^a-+Mwj3zCa"C\W0#]dQ^)6=2De4b.eTD*}LqAHmc0|xp.8g.,),Zm> PK ! Activate your 30 day free trialto unlock unlimited reading. For example, being educated might negatively correlate with the crime rate when an increase in one variable leads to a decrease in another and vice versa. Step 3: Evaluate the threats on the basis of how likely they are to have an effect and plan to control for them. PDF Key Elements of a Research Proposal - Quantitative Design Looks like youve clipped this slide to already. Correlational studies are used to assess if a relationship exists between two variables.

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