Pearson's r measures what two components of a relationship between variables?
Group of answer choices
Strength and direction
Predictions and real values
Strength and magnitude
Power and effect
Pearson's r measures what two components of a relationship between variables? Group of answer choices Strength...
Which of the following best describes correlation? a.) Correlation measures the strength of the relationship between any two variables. b.) Correlation measures the strength of the linear association between two categorical variables. c.) Correlation measures how much a change in the explanatory variable causes a change in the response variable. d.) Correlation measures the strength of the linear relationship between two quantitative variables.
The test statistic for a correlation test is: Group of answer choices X and Y Pearson's r Pearson's chi-square Z and T
If two variables are highly correlated, what do you know? Group of answer choices that they always go together that high values on one variable lead to high values on the other variable that there are no other variables responsible for the relationship that changes in one variable are accompanied by predictable changes in the other
Describe in words the nature of the relationship between each pair of variables as indicated by the value of the corelation coefficient. Be sure to include a. an appropriate graph of the relationship. b. the direction of the relationship c. the strength of the relationship d. a verbal description of the way the variables "go together I.r--96 between craving for pizza and ability to concentrate on studying. 2.r- +02 between length of marriage and marital satisfaction .r-+55 between parent and...
Pearson's r is a unique calculated test statistic in that it is always a number between: Group of answer choices 0 and 1 Z and T -1.96 and +1.96 -1.00 and +1.00
Correlation coefficient tells you: Group of answer choices: which variable causes a change in another variable if there is a difference between groups nothing important the strength and nature of the relationship between two variables
Question 3: a. I can tell the strength of a relationship between two variables by looking at the sign of the correlation coefficient(2 points) True False b. Which correlation coefficient represents the strongest relationship between two variables: (2 points) + 0.75 - 0.9 + 0.20 - 0.50
What is the relationship between linkage and crossing over? Group of answer choices Linkage produces more unique allelic combinations than crossing over. Genes that are linked never have crossing over occur between them. Crossing over increases the likelihood that two genes become linked. Crossing over can disrupt the physical linkage of two genes on a chromosome.
Real GDP growth: Group of answer choices measures all the items that go into the GDP, and then adjusts for inflation. measures the CPI, after adjusting for inflation. measures all the items that go into the GDP. estimates the GDP based on unadjusted price levels. The era of rapid productivity growth came to an end in: Group of answer choices 1986. 1990. 1980. 1973.
22. The coefficient of determination explains the relationship between two variables the proportion of variance in one variable accounted for by another variable and vice versa the cause–effect relationship between two variables all of the above 23. The ____________ assumption is met if, in a scatterplot, the distance from the points to the line is relatively equal all along the line. a. homoscedasticity b. linearity c. curvilinearity d. heterolinearity 24. The strength of a relationship between two variables in correlation...