PSYC303 week 5 quiz

The key element of a correlational design is that it __________. - ANSWER Does not manipulate, control or interfere with variables In ____________ two or more variables are measured to obtain a set of scores for each ...

The key element of a correlational design is that it __________. - ANSWER Does not manipulate, control or interfere with variables In ____________ two or more variables are measured to obtain a set of scores for each individual, and then researchers look to see if a pattern exists between the different variables. - ANSWER Correlational research strategy ________ is a graph in which each individual has a single point with coordinates determined by their scores on different variables. - ANSWER Scatter plot In __________ as scores on one variable increase so do scores on a second. - ANSWER Positive and/or direct relationship _________ is when a relationship is consistently one directional (i.e., consistently positive or consistently negative). - ANSWER Monotonic _________ is when the relationship between two variables is best described by a straight line (i.e., the points in the scatterplot tend to cluster around a straight line). - ANSWER Linear relationship _________ is a numerical value ranging from -1-to-1 and describes the direction and strength of a relationship. - ANSWER Correlation coefficient ______ refers to the fact that there could be a third unknown variable that is causing both of the variables measured in a correlation and is responsible for the observed correlation. - ANSWER Third variable problem _______ refers to the fact that in correlational research, even if the relationship was causal, one cannot determine which variable causes which. - ANSWER Directionality problem Which of the following is an advantage of a correlational design? - ANSWER It has high external validity. WRONG. It allows one to describe the strength of a relationship between two variables. WRONG. It allows one to describe the direction of a relationship between two variables. WRONG. It lets one assess a relationship between two variables in situations when an experimental design would not be possible, practical, or ethical. WRONG. In is nonintrusive and allows one to measure natural behaviors. WRONG. Which of the following is an advantage of a correlational design? Which of the following is a disadvantage of a correlational design? - ANSWER All of the above/below _____________ describes how much to variables vary together. - ANSWER Covariance In ___________ the goal is not to describe the strength and direction of the relationship but rather to predict the value of individual scores. - ANSWER Regression The _______________ is the line that minimizes the sum of the squared residual scores. - ANSWER Least-squares regression line Arjun is conducting correlational research. He is trying to determine if college GPA is related to ACT scores. He conducted a Pearson correlation test and the value of Pearson's r that he obtained was .65 and he had 102 participants. Select the correct reporting of his results from below. Group of answer choices - ANSWER College GAP was not significantly correlated with ACT scores, r=0.65, p>.05. WRONG. College GPA was not significantly correlated with ACT scores, r(100)=0.65, p>.05. WRONG. College GPA exhibited a statistically significant and strong correlation with ACT scores, r(100)=0.65, p<.05. What is the value of SP (margin of error =0.5)? - ANSWER