which of the following statements are true about correlation?

C. 0-40 chirps per 15 secondsd. The degrees of freedom for the paired samples t-test are: Participants rated their mood score out of 20 before and after listening to Reign in Blood by the thrash metal band Slayer. 1. Speed of Frank's vehicle; which of the following is NOT a property of linear correlation coefficient r? C. Call the parents. be worthwhile based on economic and environmental Exaggerationc. c. the r is the same, but with more people, degrees of freedom (df) would go up and it would be easier to reject the null hypothesis. Thank you for love that covers over a multitude of sin And today remind us of your transforming grace that is growing us into your image day by day. What test should be used to analyse the data? The first point has a larger x value and y value than the second point This is an example of error analysis. \end{array}\right] \end{array}\right] \quad C=\left[\begin{array}{rrr} a.The same participants take part in both experimental conditions. Which of the following statements is TRUE? Brainscape helps you realize your greatest personal and professional ambitions through strong habits and hyper-efficient studying. False, When are summative assessments given? As 1 means perfect positive correlation, the value of correlation more inclined towards one means that there is a strong relationship between the two . [TY9.6], 7. 1. D: -2.1946, David R. Anderson, Dennis J. Sweeney, James J Cochran, Jeffrey D. Camm, Thomas A. Williams, Claudia Bienias Gilbertson, Debra Gentene, Mark W Lehman. Refer again to Theodora's findings presented on the table. a. The eight professions were: bank traders, insurance brokers, health care professionals, business executives, volunteer workers, full-time mums, teachers, construction workers. grouping. A C 9 Q Looks at the relationship between a predictor and outcome variable at low, mean and high levels of a moderator. A. Deviation a. False, Portfolio assessments are a good standardized measure to be used as the sole criterion for eligibility in specialized programs. Select the TRUE statement about the two added points. Use a graphing utility to verify your result. A correlation of .5 would produce a scatterplot in which the slope: Is upwards (from the bottom left corner to the top right corner of the graph). Select one: A. Visualization relationship with the age of the car. A. Analyze the instructional methods, perform error analyses and adapt the instructional techniques that are being used. Like means you can . A correlation of .2 means that twenty percent of the points are highly correlated. Q5) what number represents a perfect positive correlation? a.) D. Reliability, When a test measures what it was designed to measure and what it purports to measure, this test is said to be reliable. relationship with the value of the car. cde=104. Increased sugar intake leads to higher levels of body fat. False, Norm-referenced testing includes items that always represent the content accurately for all school systems. . A strong correlation might indicate causality, but there could easily be other explanations: It may be the result of random chance, where the variables appear to be related, but there is no true underlying relationship. e.) What type of analysis could we conduct to test this hypothesis? which of the following statements about correlation is true? a. True B. r The amount of caffeine available in soft drinks, c.) Which of the following data sets would most likely have a positive association The idea that a correlation can be statistically significant without being psychologically meaningful. A: 1.533 The first point has a smaller x and a larger y value than the second point. B: 2.353 a.) Which of the following could not be a correlation coefficient: A researcher was interested in stress levels of lecturers during lecturers. Carry out the indicated algebraic operation, or explain why it cannot be performed. D. All of the above. D. Informal assessments. How much greater is the shared variance between two variables if the Pearson correlation coefficient between them is -.4 than if it is .2? D. .47, Measures of internal consistency are used to determine which of the following? This relationship is stronger than 95% of the relationships we would expect to see just by chance.d. Which of the sentences below is correct? a.) 2. c.) c.) 2. {Crickets and temperature narrative} For about what range of cricket chirps can the researcher feel comfortable about making temperature predictions. From this we can conclude that. Closely monitoring student performance Which of the following statements is true? D. All of the above. The table below contains scores from six people on two different scales that measure attitudes towards reality TV shows. Select one: \end{array}\right] \quad F=\left[\begin{array}{lll} Which of the following describes a strong statistical correlation? It is not affected. a. To do this we would create 9 dummy variables for the 'type of sport played' variable. expect the air conditioning costs to also increase, indicating a That there is a significant and moderate relationship between the variables. D. Standard error, A teacher who administers a wide range achievement test in reading (i.e., WRAT) is able to take the score obtained and generalize it across all of the individual domains and skills associated with reading. Words correct per minute C. The number of classes attended and test scores In general, the higher the reliability, the lower the standard error of measurement. Based on the regression equation, we can, A: predict the value of the dependent variable given a value of the independent variable, 7. 13. 2. what is an example of quantitative data, Answer: a because height is measured using number values, Answer: relationship between two quantitative variables measured on the same individuals. (We do not compute the segment return on assets as these companies did not report their segment income.) The aluminum costs $1.82 per strip. Almost no correlation because 0.70 is close to 1.0 a.) c. 64% Select one: About 16% of the variation in value of the car is explained by a linear Research Methods and Statistics in Psychology, Chapter 2: Research in Psychology: Objectives and Ideals, Chapter 7: Some Principles of Statistical Inference, Chapter 8: Examining Differences between Means: The t-test, Chapter 9: Examining Relationships between Variables: Correlation, Chapter 10: Comparing Two or More Means by Analysing Variances: ANOVA, Chapter 11: Analysing Other Forms of Data: Chi-square and Distribution-free Tests, Chapter 12: Classical Qualitative Methods, Chapter 13: Contextual Qualitative Methods, Chapter 15: Conclusion: Managing Uncertainty in Psychological Research, upgrade your version of Internet Explorer. So it must be related to both Select one: It is affected by an influential point. Learn for free about math, art, computer programming, economics, physics, basic, science, medical, finance, history, and better. Solve the system using the inverse method.\, {2x+2y+3z=cxy=dy+4z=e\left\{\begin{aligned}-2 x+2 y+3 z &=c \\ x-y &=d \\ y+4 z &=e \end{aligned}\right. C. Content validity A high score on one variable is associated with a low score on the other. Which of the following statements is true concerning the relationship between reliability and standard error of measurement? Which of the following is true? Which of the these scatterplots will have the smallest "y intercept"? Select one: b. C. Interrater reliability how closely related the data is within each group. While some research suggests that certain genetic markers may play a role, it's important to remember that other factors, such as environmental influences, may also be at play. Select one: A. Questionnaire 6. She created a questionnaire that measured these two constructs and gave the test to 140 men and 140 women. A perfect positive correlation would be indicated by a straight line between scores on a scattergram. Answer: b, when transforming the variable leads to a linear relationship, the original variables have a nonlinear relationship, their correlation is not close to one, and the residuals to not show a random pattern. The correlation is .85. C: 0.367 D: 0.606, 12. One measurement variable has a cause and effect relationship with another measurement variable.c. All of the above. A. Group of answer choices The correlation coefficient has units. We can use them to make predictions. when determining whether there is a correlation between two variables, one should use a _______ to explore the data visually. A graph plotting the scores on one variable against the scores on another. What type of graph is this a glossary definition of? The effect of depression on sleep problems through worry. A. Construct validity Which of the following is NOT necessary to establish causality? What type of analysis could we conduct to test this hypothesis? It cannot be used with binary variables (those taking on a value of 0 or 1). B. Percentiles Not enough information to tell. Perform a randomized, controlled experiment. c. a nominal scale A. Analyze the instructional methods, perform error analyses and adapt the instructional techniques that are being used. A correlation coefficient of -0.90 indicates that there is an inconsistent relationship between the variables. b. it slopes up to right and the correlation it +0.57 Regression, on the other hand, evaluates the relationship between an independent and a dependent variable. Which of the following statements is true? Select one: When a teacher evaluates her students' ability to read a map of bus routes while the class is in the bus terminal, the teacher is using what type of assessment to evaluate these skills? 7 & 3 The Contemporary Model of Assessment is focused on which of the following? All of the above. If she doubled the number of players measured, but ended up with the same correlation (r) what effect would that have on the results? II Car dry is related further strongly to reliability faster to maintenance cost. All of the above statements are true. Refer the student for an evaluation. B. Q12) after graphing data about hours of study and test grades, laura found that there is a strong positive association between higher hours of study and higher test grades. Select one: Check if lower blood pressure is present or absent when exercise is This problem has been solved! d. The table below contains scores from six people on two different scales that measure attitudes towards reality TV shows. Select one: B. Test-retest reliability Welcome those of you who are joining us today. False, The goal against which progress is measured in curriculum-based measurement is known as which of the following? A. As number of months If the samples come from the same population, then: Their means should be roughly equal. Question: Which of the following statements are true of correlation coefficients? B. What are the degrees of freedom for this study? This means students with lower verbal SAT scores tend to have lower GPAs as well.b. environmental perspective, and she has asked you to research a) Causation arises when there is correlation between two variables and can also arise when there is no correlation. In the space below, draw an example of a parallelogram that has exactly two lines of symmetry. This means that as the distance of a golf putt goes up, the success rate of making the putt goes down..d. c.) a. the LSRL equation to predict the mother's height from the father's height is y=57.3+0.962x To verify this believe, the following data was collected: A. Trendline d. it slopes down to the right and the correltion is +0.57 which of the following is true of correlations?lehigh football camp 2022. which of the following is true of correlations? False, When teachers use the content of a classroom social studies text to design a test for their students, the teacher is using a formalized assessment measure. Number of scratches on Lela's car, d.) & G=\left[\begin{array}{rrr} The relationship between the predictor and the outcome is completely wiped out when the mediator is included in the model. Between 0 and 100 hours.c. Other things being equal, compared to the paired-samples (or dependent) t-test, the independent t-test: That the variance of a difference between two independent variables is equal to the sum of their variances. A. Let all the earth be silent before him. The direct labor cost is$15.65 per hour. If all the plots on a scatter diagram lie on a straight line, (perfect correlation) what is the standard error of estimate? B. Coefficient alpha Females and males did not significantly differ in the time spent using email, t(7.18) = -1.90, p = .10. False, A task analysis of a chapter quiz is performed as a method of standardized assessment. Given the following five points: (-2,0), (-1,0), (0,1), (1,1), and (2,3). The closer the coefficient is to 1 or -1, the weaker the relationship. C: 2.1946 For each of the following characteristics, say whether it describes a monopoly firm, a monopolistically competitive firm, both, or neither. That someone who has children is likely to be more happy than someone who doesn't. The presence of God is in his temple. c. One variable is completely predictive of the other. 1 & 0 & 0 \\ 3. d. 80%, If the coefficient of determination is 0.20, what percent of variation is not explained? The course section number and the test grade A. C. CBM : an American History (Eric Foner), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. A. a. Daily demand for a product is 100 units, with a standard deviation of 25 units. Which of the following statements explains how the correlation is affected? . True The equation for such a line is y = a + bx, where b is the slope of the line (its gradient) and a is the y intercept (where it cuts the vertical axis). Which type of relationship is this a glossary definition of? All of these. One variable is completely responsible for variation in the other. Select one: The criterion established for the test All of the above. Positive correlation What type of statistical error is being made in the following statement? It ranges from -1.0 to +1.0 A positive correlation means that two variables tend to change in opposite directions. d. either A or B. explanatory/response relationship. How could we analyse these data? Between 0 and 20 hours.b. The relationship between two variables partialling out the effect that a third variable has on one of those variables can be expressed using a: Imagine a researcher wanted to investigate whether there was a significant correlation between IQ and annual income, but she had reason to believe that work ethic would influence both of these variables. False, Discrete Probability- 6.1(Probability of an e. What is the null hypothesis of this study? True Why is it common in moderation analysis to transform the predictors using grand mean centring? Number of months Lela owns a car; As part of her analysis she investigates the correlations between pairs of these variables. Imagine it was found that worry explains the relationship between depression and sleep problems (i.e., depressed people tend to worry more than non-depressed people, leading them to experience more sleep problems). 11. A randomized controlled experiment is one of the best ways to 1. If this uphill linear trend continues, 50 years from now, one out of every three of us will be an Elvis impersonator.. 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. The news "weak" mention to the strength for an relationship (how close the product falsehoods to to border out best fit), which has does effect with slant. 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. d. Theodora found no significant difference between men and women for d.) You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Select one: Gpa= 0.55+.00161(sat total) r= 0.632 The outcome was the average quality of sleep score over the course of the month. What is the general form of the regression equation? As part of a psychology assignment Kate has to calculate Pearsons r to measure the strength of association between two variables. 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. It allows you to check to see if an effect is What should she conclude? The Pearson product-moment correlation coefficient, r, requires B. Which of the following describes a detrended time series? C. Formal assessments Consistency of items on an instrument to measure a skill, trait or domain, Estimated true score allows you to calculate the amount of error with reference to the distance of the score from the mean of the group. +.28 B. Which of the following statements regarding the coefficient of correlation is true?

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