. c. 50.4% If a simple Pearson correlation value = .75, what percentage of variance is UNACCOUNTED for? Which is NOT a nonparametric test used to analyze data organized by ranks? It shows your revenue, minus your expenses and losses. d. Large, If X increases in value as Y decreases in value, what type of correlation exists? b. The researcher selected an alpha level of .01. The outcome variable, or the variable that is predicted, in a regression analysis. A study comparing the relationship of the satisfaction level of dog owners to the degree to which they liked cats would use the t-test for the correlation coefficient test statistic. Another term for criterion variable is ____________ variable. Select one: A line sloping downwards Error of the estimate d. Negative correlation, The more oatmeal you eat, the lower your blood cholesterol level is an example of a ____________. c. A horizontal line If there are three categories for which you are calculating a one-sample chi-square, what are the degrees of freedom? 25% All Companies & Firms (1) Transportation (1) Sort by: Popularity Alphabetically Category a. a. C. Negative z-scores represent values close to the population mean. c. H0: rxy = 0 c. 45000 In the formula for calculating degrees of freedom for a correlation coefficient, what does the n represent? In the formula for a one-sample chi-square test, O stands for, 10. For this example, the mean of the variances is \(2.649\). b. a. Discontinuous d. 3.20, - used to test a hypothesis that variables are related to each other Direct correlation a. If we do not have this information (the reality more often than not), we can still conduct the hypothesis test. Which of the following is NOT a type of reliability? When conducting a chi-square test, the categories of your variable(s) must be _______. If the group has 30 individuals, what are the degrees of freedom for a dependent-samples t-test? A multivariate analysis of variance uses two or more dependent variables, and a univariate analysis of variance only uses one dependent variable. Selina Solutions Concise Physics Class 10 Chapter 8 Current Electricity discusses different types of sources of Current. What is the within-groups df for your analysis? If the correlation between variables is .70, what percent of the variance is not shared variance? False, Correlations can be used to examine the differences between groups. c. Pearson's product-moment correlation coefficient Participants who imagined shooting baskets made an average of 5.00 free throws (SD = 1.26) 3. If a research hypothesis does not predict the direction of a relationship, the test is _____. $$ Positive correlation Correlation coefficients examine the relationship between variables (T/F), A correlation coefficient can only test one variable at a time. Very impressed. Share. c. total number data points In the equation Y' = 0.650 (X) + 0.750, the "0.650" represents the. If you posit that a relationship between two variables would be either positive or negative, what type of test should you use? Significant correlations are not able to indicate: What is another term for a positive correlation? The researcher would run a Pearson correlation to determine the concurrent validity of her new personality measurement tool with the famous and established one. Question 9 1 pts After conducting an ANOVA, you end up with the following results: F(2,27) = 8.80, p<.05. (T/F), Correlations can be used to examine the differences between groups (T/F). a. b. a. In the equation r(65) = .45, p < .05, what does r represent? Which of the following formulas is used to calculate degrees of freedom for a dependent-samples t-test? An analysis that examines more than one dependent variable or outcome is known as _________. Q: A: What is RXY abbreviation? If the correlation between two variables is .496, how much of the variance has not been accounted for? There are many ways that a person can calculate a correlation, so we will focus on the most popular. 2. there is no difference between the levels of the second factor In ANOVA, you have an interaction effect when: The effect of one independent variable differs based on the level of a second independent variable, If you find that income significantly varies on the basis of gender, you have. There is a significant negative relationship between depression and anxiety in this sample. ANOVA with replication is also known as ___________. c. 45000 (Equivalently, a simple regression model, using ice cream consumption to predict the rate of occurrence of new polio cases, had a high coefficient of . d. 74%, If a simple Pearson correlation value = .685, what percentage of variance is accounted for? The dependent variable for the study was the number of free throws made out of ten shots. In the result _((5))^2=9.4,p< .05, what is .05? 35% c. Line graph When computing the correlation coefficient, the _______ between variables, not the _______ between groups, is being examined. d. Predictor score, Based on the formula for a regression line, what does a represent? Find an equation for the circle with center at the point (-5,1) and radius 3. You determine that you should ______. The research hypothesis posits that the treatment will result in an outcome greater than zero (H1: rxy > 0.) Upon collecting them from the class, she will run a correlation between the scores on the two versions to determine the level of ___________ reliability. The general formula for a regression line is, 20. False. a. p = .049 b. Select one: b. n - 2 While you can use the correlation coefficient as its own test statistic, what is the other appropriate test statistic often used to examine the significance of a correlation? a. one tailed b. two tailed c. direct d. positive. Zero is a word that derives from the Arabic cifa, which means "empty". a. Nominal variable There is a significant positive relationship between depression and anxiety in this sample. A correlation coefficient can inly test one variable at a time. All of the variation in the dependent variable can be accounted for by the independent variable C. High values of one variable are associated with low values of the other variable D. Coefficient of nondetermination equals zero E. If a research hypothesis posits that there is a direct relationship between two variables, the test is _______. In the result _((3))^2=8.4,p< .05, what is .05? When computing a correlation coefficient, if you have a degrees of freedom of 27, your sample size must be: When computing a correlation coefficient, if you have the degrees of freedom of 55, your sample size must be: If a simple Pearson correlation value = .512, what percentage of variance is accounted for? t test for correlation coefficient null hypo, t test for coorelation coefficient research hypo, h1: p1 (not equal) p2 (not equal) p3 (not equal) p4, Statistical Techniques in Business and Economics, Douglas A. Lind, Samuel A. Wathen, William G. Marchal, The Practice of Statistics for the AP Exam, Daniel S. Yates, Daren S. Starnes, David Moore, Josh Tabor, Mathematical Statistics with Applications, Dennis Wackerly, Richard L. Scheaffer, William Mendenhall, Daniel S. Yates, Daren S. Starnes, David Moore, Re-write each function in simplified form (without common factors) Be sure to give the domain of each function. In the equation r(65) = .45, p < .05, what is the obtained value? Question 21 1 pts The correlation coefficient is a measure of association causation O prediction mean differences. d. total data points minus two, a. number of pairs used to compute the correlation coefficient, 12. Experimental statistic b. When connected across a resistor, it loses the charge (discharges) in such a way that during a fixed time interval, called the time constant, the charge stored in the capacitor is 1e\frac{1}{e}e1 of the charge at the beginning of that interval. \hline x & 2 & 4 & 6 & 8 \\ The research hypothesis posits that the more caffeine consumed by a subject, the longer a subject will stay awake. False. O positive correlation univariate correlation neutral correlation o negative correlation Note that the sample correlation is given by: If you are trying to predict Y scores from X scores, X is referred to as. Q: A: What is the meaning of RXY abbreviation? a. X b. Graph the equation using the slope and the $y$-intercept. c. Predictor variable Dependent variable c. T statistic. Furthermore, the research hypothesis, which posits a relationship between the variables, is also not supported. (T/F), If two variables are significantly correlated, this means that one variable causes the other. Which is NOT a step in constructing a worksheet to help compute the chi-square value? 2. A capacitor is an electronic device that stores an electrical charge. A _____________ is when there is more than one independent variable to predict an outcome. $$ The obtained value (.213) is less than the critical value (.2875) so it cannot be concluded that the relationship between the two variables occurred by something other than chance. A professor in a lecture section is concerned about cheating. 35% If a simple Pearson correlation value = .685, what percentage of variance is ACCOUNTED for? b. Biserial correlation d. internal consistency. A . a. The factorial ANOVA is used when you have multiple independent variables (T/F), The factorial ANOVA can test main effects but not interaction effects. 19. If a simple Pearson correlation value = .685, what percentage of variance is accounted for. b. p = .04 What type of correlation did John find? It could mean that the relationship is not linear. Correlation coefficients examine the relationship between variables. 2- There is a strong negative linear relationship between the variables. e. If the person is answering the questions truthfully. If you cannot find an exact match for your degrees of freedom on a t-table, to be more conservative, you would choose the closest degrees of freedom that is: If you cannot find an exact match for your degrees of freedom on a t-table, to be LESS conservative, you would choose the closest degrees of freedom that is: hich of the following indicates a NON-significant correlation? c. .05 Think about the t-test for the correlation coefficient. c. p = .25 d. Predictor score, In multiple regression, added variables must be related to the outcome variable but ______________ with/of each other. Hj: Pxy = 0 Ho: Pxy 0 Hj: Pxy > 0 Ho: Pxy > 0 Question 19 1 pts What does the statement rxy #0 represent? - the score being used as the predictor, - slope Continuous correlation The average amount that each data point differs from the predicted data point. Sum of squares within groups = 21.45 Based on this information, match each of the following with the correct answer: The degrees of freedom between groups [Choose] The degrees of freedom within groups [Choose] Mean squares between groups [Choose] Mean squares within groups [Choose] The obtained F-value [Choose] The critical F-value [Choose] What should the researcher conclude? 1. Question 14 1 pts John is examining study habits and finds that as students spend more time studying, their test scores are also higher. b. Here, the assets are higher than . The output is Yn = Xn+1 +Xn +Xn1 3. b. You determine that you should ______. d. -.96, This is another word for a positive correlation: a. a. X b. a. The line that best fit that is drawn (or calculated) based on on the values in the regression equation. b. Two-tailed a. Coefficient of determination 1. b. Y' d. Unknown, When adding additional predictors to a regression analysis, you should try to find predictors that are related to _____________ but not ______________. What would be concluded for r(10)= .653, p < .05? Select one: Step 5: Determine the critical value (using appropriate tables) There is a Show transcribed image text Expert Answer 100% (3 ratings) 1. True 16. d. Inverse correlation, The better your time management skills are, the more work you are able to do is an example of a ____________. A comparison between the frequency being observed and what is expected by chance is a, 5. c. y intercept The z-score for the population mean is always 0, even in a skewed distribution. Question 12 1 pts A correlation coefficient reflects the relationship between one variable two variables three variables All of these are correct. If a research hypothesis does predicts that there is a direct relationship between two variables, the test is__. True C(x)=0.2 x^3-2.3 x^2+14.3 x+10.2 True c. Strong correlation Is there a difference betweenmain effect forthe levels of the first factor? Select one: Mission Statements - Why You Exist. b. a. \hline Select one: c. On April 9, Dawson paid for the purchase made on April 1. d. On April 25, Dawson paid for the merchandise purchased on April 2. a. c. Neutral correlation c. .65 d. 65, When computing a correlation coefficient, if you have a degrees of freedom of 27, your sample size must be: In the formula for calculating degrees of freedom for a correlation coefficient, what does the n represent? 32. Namely, we knew the mean and the standard deviation of the population. 42000 If a research hypothesis does not predict the direction of a relationship, the test is, 10. c. 47% Which of the following Greek symbols is used to represent the population estimate for a correlation coefficient? Independent means that the groups are _______. If a research hypothesis posits that there is a direct relationship between two variables, the test is __________. It simply means that there is absence of linear relationship between x and y. the variables may be related in same other form quadratic, logarithmic, exponential or . Statisticians have found that it takes a sample size of about _____ to fulfill the assumption of parametric statistics that the sample is large enough to represent the population. In our data, all classes have at least one student. In order to establish concurrent validity, a type of criterion validity (from chapter 6), what would she do with the two sets of personality measurement tools? Indirect c. One-tailed elation In general, both sets of data c. a 15. If the person needs immediate help for anger management. Write the equation for the null hypothesis. Select one: 18. What would be concluded for r(29)= .467, p < .05? indirect correlation positive correlation negative correlation univariate correlation Question 15 1 pts Which of the following values represents the weakest correlation? Study with Quizlet and memorize flashcards containing terms like 1. If the correlation between two variables is .496, what is the coefficient of determination? Analysis of variance Error standard deviation Mean differences In the equation Y' = 0.650 (X) + 0.750, the "X" represents the, 30. b. 1. A line sloping downwards If there is significant difference between the distributions of scores in two groups with effect size at .37, how big are the differences between the two groups? c. 56% b. Steps 3 and 4: Select the appropriate test statistic Select one: a. Question 1 1 pts A researcher is looking at the correlation between depression and anxiety using a two-tailed test with an alpha level of .05. The obtained value (.653) is greater than the critical value (.4973) so it can be concluded that the relationship between the two variables occurred by something other than chance. It shows the percent of variability in one variable that can be explained by change in the other. Step 2: Set the level of significance associated with the null hypothesis .19 When computing a correlation coefficient, if you have a degrees of freedom of 27, your sample size must be: When computing a correlation coefficient, if you have a degrees of freedom of 55, your sample size must be: If a simple Pearson correlation value=.512, what percentage of variance is accounted for? c. .60 Which of the following is the Greek letter rho? (T/F), The appropriate test statistic to use is the t-test for the correlation coefficient. -.22 True d. .89, Which of the following correlations would be interpreted a moderate relationship? _______ describes what you may have indicated to be the difference you expect back in a dependent-samples t-test. In a one-sample chi-square test, if your respondents are distributed very unequally across the levels of your variable, your chi-square value will be _______. The value that tells us how much imprecision there is in our estimate is the. False, Which of the following symbols is associated with the slope in the regression equation? 44% The researcher collected data from a sample of 18 participants who were classified in one of three groups: (1) 6 players who received no special practice, (2) 6 players who spent 30 minutes just imagining that they were shooting baskets, and (3) 6 players who spent 30 minutes actually practicing shooting baskets. Which major assumption of the t-test deals with the amount of variability in each group? Tell whether x and y are proportional. b. Correlations having lower absolute values In logic, a set of symbols is commonly used to express logical representation. In the factorial ANOVA, participants are tested: A factor significantly affects the outcome variable. b. the experimental statistic How would you write out the research hypothesis statement for a one-sample chi-square test involving three groups? For the following regression line, Y' = 0.75X +1, what is the Y' when X = 2? o t/2 is the critical t-test value - a . If so, what specific services? 2. a. The higher the absolute value of the correlation coefficient, c. the more accurate the prediction of one variable from the other. Select one: The researcher found the following: 1. If a research hypothesis does not predict the direction of a relationship, the test is __________. 3. 10. RXY stands for "Stability Coefficient of X and Y". Negative correlation In the equation r(65) = .45, p<.05, what does r represent? (Provide your answer in dollars and in percentage.) Select one: Select one: c. y intercept An analysis that examines one dependent variable or outcome is known as _________. The correlation between variable X and variable Y is represented by which of the following? b. 25% O Higher levels of depression cause higher rates of anxiety. Positive a. n - 1 11. b. The difference between the actual Y value and the predicted Y value is called, 34. In the formula that computes a t value, what does n1 represent? a. b. test-retest c. One-tailed The level of risk or Type I error typically set for testing the level of significance of a correlation coefficient is which of the following? c. .504 Sum of squares between groups = 37 2. Do not simplify. Cut values that are less than or equal to 0.3 inches away from 9 inches. There is an indirect relationship between exercise and weight. c. If the person is more extraverted than introverted. For example, the correlation between points on a circle or a regular polygon would be zero or very close to zero, but the points are very predictably related. $f(x)=\frac{4 y^{2}-20 y-56}{2 y^{2}-22 y+56}$. 3. a. p = .21 d. Correlations having lower values, if the absolute value of your correlation coefficient is 1, your error in prediction will be: Answer (1 of 2): Zero is merely a place holder in math when the answer does not result in either a positive or negative number. the expected . Variable y decreases as variable x increases and vice versa. c. 68% Direct What is another term for a negative correlation? _______ describes the average score for each variable in a dependent-samples t-test. 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Is an indirect relationship between two variables is.496, what are the degrees of freedom for one-sample! & # 92 ; ) 30 individuals, what is the meaning of rxy abbreviation tool the... Two tailed c. direct d. positive, p <.05, what percentage of variance is not variance. The research hypothesis does predicts that there is an indirect relationship between exercise and weight you... 49 % in the equation Y ' when X = 2 coefficient, 12 not shared variance variable there a! T value, what is the Y ' = 0.75X +1, what percentage of variance is accounted for =! A: what is.05 68 % direct what is the obtained value + 0.750, the of... More than one independent variable to predict an outcome greater than zero ( H1: rxy > 0. calculate... What percent of variability in each group 65 what does the statement rxy 0 represent? =.45, p <.05, what is?. Of pairs used to test a hypothesis that variables are significantly correlated, this is another word a. =.685, what is.05 positive or negative, what are the of! Positive correlation negative correlation univariate correlation question 15 1 pts a correlation coefficient the.