a. Theodora found a significant difference between men and women's d. There ought to be less unsystematic variance compared to the independent t-test. Below is a list of multiple-choice questions and answers on Correlation and Regression to understand the topic better. Select one: If a calculation of Pearsons r yields a value of .96, which of the following statements is false? D. A t-test was calculated and there is no significant difference in productivity between the two groups t(280) = 3.64; n.s. Select one: True Paraphrase a story. Amen. B. Content validity Speed of Frank's vehicle; c. it slopes down to the right and the correltion is -0.57 Select two conclusions that the researcher can make from this data. Item bias Which of the following statements about correlation ar - ITProSpt In general, the higher the reliability, the lower the standard error of measurement. A variable is a lurking variable if it can influence an a.) As the degrees of freedom increase, the distribution becomes closer to normal. That there is a significant and moderate relationship between the variables. (A) I for (B) II for (C) III alone (D) I and II (E) IODIN, II, and III As one of the variables increases, the other decreases. The presence of God is in his temple. As part of a psychology assignment Kate has to calculate Pearsons r to measure the strength of association between two variables. Select one: [TY9.7], 8. Which of the following statements is not true? c.) To imply causation, the correlation must be 1. d.) A high correlation means that the response variable is caused by the explanatory variable. The idea that a correlation between variables does not mean that one variable is responsible for variation in the other. If a relationship is found to be statistically significant, there is a strong relationship between the two measurement variables.b. C. Paired-samples (dependent or related) t-test. She created a questionnaire that measured these two constructs and gave the test to 140 men and 140 women. should go down. . B: 2.353 sped 430 chapters 4,5,6 Flashcards | Quizlet So here were asked which of the following statements about correlation, R is true and we have a a correlation of 0.2 means that 20% of the points are highly correlated. D: 0.606, 12. True B. "Correlation" simply means relationship. Imagine we recruited 1000 participants and asked them to rate out of 10 (10 = They are the best sports person in the world, 0 = They are the worst sports person in the world) how much they liked 100 famous sports people from 10 different types of sports (10 sports people from each category). Correlational studies can determine causation: Correlation does not imply causation. Participants rated their mood score out of 20 before and after listening to Reign in Blood by the thrash metal band Slayer. C. CBM chapter 10 Flashcards by joy day | Brainscape A: -12.201 Causation means that one event causes another event to occur. It is impossible to say without information about how psychological well-being is defined. Expectation. The number of soft drink brands available for purchase, b.) B. Percentiles and a correlation coefficient between 0 and -1? False, Portfolio assessments are a good standardized measure to be used as the sole criterion for eligibility in specialized programs. when determining whether there is a correlation between two variables, one should use a _______ to explore the data visually. c. A value of 0.00 indicates two variables are not related This correlation is useful for predictive purposes. the car, x. The table below contains scores from six people on two different scales that measure attitudes towards reality TV shows. A. The Pearson product-moment correlation coefficient, r, requires C. Norm-referenced assessment If we knew a womans height, we could predict the average weight for all women with that same height.d. Which of following is not correct about properties of correlation Slope= 0.962 for every one inch of additional height for the father we predict an increase of 0.962 inches in the mother's height. Imagine we wanted to look at predictors of popularity of famous sports people. Answer: measures the outcome of the study, what we are trying to predict, plotted on the y axis. d.) Level of education; The closer the coefficient is to 1 or -1, the weaker the relationship. c.) Increased sugar intake leads to higher levels of body fat. Which of the following statements is true concerning the relationship between reliability and standard error of measurement? D. All of the above, Both norm-referenced assessment and informal methods of assessment could have problems with cultural bias. Correlation is the statistical relationship between two quantities. B. D. .47, Measures of internal consistency are used to determine which of the following? Generally, when tests measure constructs that are affected by developmental changes, the reliability may not be as good for very young ages. To imply causation, the correlation must be 1. 2. 2x+2y+3zxyy+4z=c=d=e, [cde]=[104]\left[\begin{array}{l}c \\ d \\ e\end{array}\right]=\left[\begin{array}{r}-1 \\ 0 \\ 4\end{array}\right] As 1 means perfect positive correlation, the value of correlation more inclined towards one means that there is a strong relationship between the two . B. CBA & A=\left[\begin{array}{rr} B. be worthwhile based on economic and environmental Listening to Slayer does not affect mood. It is not possible to predict exam score with study time. What should he report? Which of the following is a correct interpretation of a correlation? False, The goal against which progress is measured in curriculum-based measurement is known as which of the following? Select one: B. If you were the teacher of this student, your next action should most likely be: d.) C. +.57 condition. Which of the following statements is TRUE? Based on the regression equation, we can, A: predict the value of the dependent variable given a value of the independent variable, 7. expect the air conditioning costs to also increase, indicating a She finds that r = .2 and that this is significant at her selected alpha level of .05. It is not affected. This relationship is stronger than 95% of the relationships we would expect to see just by chance.d. When conducting an independent t-test, what is the dependent variable? C. The number of classes attended and test scores The first point has a larger x value and y value than the second point The odd-even comparison method True 3. the linear correlation r is robust. Answered: Correlation and regression are two | bartleby B. Aimline In the house of the Lord. which of the following is true of correlations? Number of school absences; C: 2.132 Solved 1. Which of the following statements is true? a) | Chegg.com The idea that a strong correlation between variables does not mean that one predicts the other. Which of the following statements about correlation is true? C. Linguistic performance A Pearson's correlation coefficient of -.5 would be represented by a scatterplot in which: There is a moderately good fit between the regression line and the individual data points on the scatterplot. Which of the following statements about Pearson's correlation coefficient is not true? 14. The sampling distribution is normally distributed. The chances of observing the relationship in the sample when nothing is actually going on in the population are small (less than 5%).c. C. Prevention and early intervention 2. The scores obtained by Dr. Smith on a psychology test were compared and it was determined that students who scored high on the first exam tended to score high on the second exam. Recall the coefficient of determination is a measure of the C. Split-half reliability you consume. Answer: the scatterplot is just dots spread out haphazardly because there is no relationship. C. Instructional To ensure full site functionality, please use an alternative web browser or upgrade your version of Internet Explorer. Number of gallons of gas used by Paul's car B. a.)Incorrect. False, When a preschool test is needed to determine how students will perform in reading, it is important that the test have good predictive validity. a.) 60-80 degreesc. Select one: What is the variable used to predict the value of another called? What is the term used to ensure that a psychological trait, personality trait, psychological concept attribute or theoretical characteristic is measured by an instrument? 1. B: for each unit increase in X, Y increases by 20. False, Which of the following is not used to measure internal consistency? c.)Correct. Answer: c, because x and y are interchangeable, and r does not depend on them, Q9) a study of department chairperson ratings and student rating of the performance of high school stats teachers reports a correlation of r=1.15 between the two ratings. Does this mean that the more you study the better you score? Theodora is researcher who compares how different companies address workers' quality of life and general productivity. b.)Correct. A. Correlation vs Causation | Introduction to Statistics | JMP c) Causation can only arise when correlation is not present. What type of data is typically acquired from a fluency probe? A scatterplot displays data about two variables as a set of points in the xy xy -plane and is a useful tool for determining if there is a correlation between the variables. d.) d. 0.806, If the coefficient of correlation is 0.60, what percent of variation is not explained? -we say there is a positive correlation between x and y if there is no distinct pattern in the scatterplot -we say that there is a positive correlation between x and y if the x-values increase as the corresponding y-values increase b.) d. Both A and C, Which of the following statements regarding the coefficient of correlation 15. Yes. The fact that a data set shows a shallow correlation does does give them any information about the order of the slope. Select one: & D=\left[\begin{array}{ll} b.) A t-test was calculated and there is no significant difference in productivity between the two groups t(278) = 3.64; n.s. Scatterplots are a very poor way to show correlations. C. Scored by students \end{array}\right] \quad E=\left[\begin{array}{l} Suppose the least squares regression equation is Y' = 1202 + 1,133X. a.) Since these values are outside of the other data in the x and y 3. Why is it common in moderation analysis to transform the predictors using grand mean centring? We might hypothesize that the type of sport played would predict how popular the sports person was. D. Alternative forms of validity, The scores obtained by Dr. Smith on a psychology test were compared and it was determined that students who scored high on the first exam tended to score high on the second exam. In the least squares equation, Y' = 10 + 20X the value of 20 indicates. b.)Correct. Use the approximate half-life formula. Correlation and Causation | Lesson (article) | Khan Academy 0-40 chirps per 15 secondsd. We say that there is a positive correlation between x and y if the x-values increase as the corresponding y-values decrease. False, What type of data gathering tool would a teacher use if they wanted to find out what types of books their students like to read? 11. be worthwhile,from both an economic perspective and an c. All of these are correct.!!!!!!!!!!!!! Your Mobile number and Email id will not be published. Given the following five points: (-2,0), (-1,0), (0,1), (1,1), and (2,3). C. Content validity a. 1. d.) A: 2.132 D: 3.182, 13. a.)Correct. 2 & -\frac{5}{2} & 0 \\ That you are above all others. 0 & 7 Which of the following statements is TRUE? Be perfect correlation when the points lie exactly in a straight line results in article zero C correlation is not affected by which variables called X. The first point has a larger x value and a smaller y value than the second point observed y - predicted y= residuals. True A positive correlation means that two variables tend to change in opposite directions. Closely monitoring student performance Which of the following is true about the standard error of estimate? a. The 3. Which of the following sentences best describes mediation? When X = 3, what does Y' equal? b. positive association. While a correlation between two variables may suggest a relationship, it does not prove that one vari. The t-score was 2.56. Which of the following represents the probable correlation between the two sets of scores? Select one: Which of the following statements is TRUE? \end{array}\right] \quad F=\left[\begin{array}{lll} Which of the following statements is true? 10. Two measurement variables have a strong linear relationship.d. What are the degrees of freedom for this study? a. Scatterplot A which of the following statements about correlation is true? What is the general form of the regression equation? [TY9.4], 5. Which of the following statements is true of the problem of restricted range? What is the null hypothesis of this study? Which of the following is it inappropriate to conclude from this research? They are outliers in the x-direction. The data looks the same as when two variables have a deterministic linear relationship. Which of the following data sets would most likely have a positive association It is affected by non-linearity. A. Be careful not to confuse angle furthermore strength. {Study time and exam score narrative} Suppose the professor later found out that his correlation was not +.80, but rather it was +.08. suppose the correlation is negative, given two points from the scatterplot, which of the following is possible? Correlation simply measures association. Answer: explains or influences change in the response variables, is what we are using to make the prediction, plotted on x axis. ) 2. A. Fluency What can we conclude if the coefficient of determination is 0.94? Let us rejoice and be glad. It is less than zero\u000B c. It is more than zero\u000B d. It equals the computed sample correlation, Winnie found an observed correlation coefficient of 0, what should she conclude? A. One variable is completely responsible for variation in the other. Which of the sentences below is correct? One blade is stamped every 5 seconds. Select one:

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