Measures of association allow a researcher to determine _________________.
Choices A. How much of the sample lies below the lower boundary |
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B. How much of the sample lies above the upper boundary |
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C. The strength of the relationship between the variables |
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D. The significance of the relationship between the variables |
option C is correct
C. The strength of the relationship between the variables
(since it describes the strength and direction between two variables)
Measures of association allow a researcher to determine _________________. Choices A. How much of the sample...
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.
Show work please
A researcher measures the association between the radius of the forearm (inches) and the gripping strength (pounds) of 20 teenagers given by the graph below. 70 50 90 11 1 314 Crcum The graph indicates which type of association between forearm radius and grip strength The measurement grip strength is the The type of association between circumference and grip strength is a. i. Positive ii. Negative ii. No association b. i. Explanatory variable i Response variable c....
A researcher wishes to determine whether the rate of water flow (in liters per second) over an experimental soil bed can be used to predict the amount of soil washed away (in kilograms). In this study, the explanatory variable is the A. rate of water flow. B. amount of eroded soil. C. depth of the soil bed. D. size of the soil bed. E. None of the above. (b) A researcher measures the correlation between two variables. This correlation tells...
A researcher wants to test if there is an association between
the type of cardboard box (four different types) and its
compression strength. Six boxes of each type were tested to see how
much compression was needed in order to crush the box.
(a) What will be the distribution of the statistic needed to get
the p-value for a test of this type?
F6,24
F3,23
F3,20
?215
?224
?
(b) The researcher collects the data and obtains the
side-by-side boxplots...
PLS
ANSWER QUICK
A researcher obtains a sample of n = 25 students and measures each individual's reading performance two times: before and after implementation of a new special reading program. The data will be used to estimate the mean amount of improvement. Which equation should the researcher use? O A. the single-sample t equation B. the independent-measures t equation c. the repeated-measures t equation D. cannot determine without additional information
A researcher studies the relationship between taking aminoglycosides and muscle strength in a random sample of patients who take aminoglycosides and a random sample of patients who do not take aminoglycosides. An average strength score is calculated for each participant. To determine if there is a statistically significant difference in the average strength score an independent t-test is utilized. The researchers report that taking aminoglycosides is associated with a lower average strength score (t=1.984, p=0.025). You know this means: A...
A) A researcher wishes to determine if there is an association between taking frequent breaks (minutes away from desk), certification status (yes/no), age (number of years) and reaching monthly productivity goals in the clinical documentation department (yes/no). What would be the appropriate test to use? a) Multiple Regression b) Logistic Regression c) Pearson's Correlation d) ANOVA Test B) A psychiatric nurse practitioner completes a study examining psychological distress scores, hours spent exercising, and number of counseling sessions to see if...
Using the following information: a) calculate the various measures of association for a 3 x 3 design; and b) indicate which results are best, given the types of variables involved. Patients are randomly divided into three groups and treated with one of three medications for high cholesterol. After six months of therapy they are assessed to determine if they met their desired cholesterol goal, did not meet goal, or were changed to a different treatment regimen. Is there a relationship...
1. A researcher intends to use a Chi2 test for Goodness of Fit to determine whether there is any preference between 10 brands of cookies. What is the critical Chi2 value for a sample of n = 300 participants and p < .01? A. 20.48 B. 11.07 C. 16.92 D. 18.31 E. 21.67 2. A researcher conducted a study on a sample of n = 80 undergraduates to evaluate preferences among students for four different textbooks for the Introduction to...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Social Interaction Internet Use Y X 4 8 7 4 6 7 12 7 3 6 1 11 10 2 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient determination. (Round your answer to three decimal places.) (c) Using...