NURS 641 midterm review questions with correct
answers
The strength of association between two variables is indicated by which
statistical method?
a. Correlation coefficient
b. Cronbach's alpha
c. Dichotomous measurement
d. Histogram Correct Answer-A correlation coefficient
What does a p-value of 0.08 mean?
a. There are 8 chances in 100 that the finding is true
b. There are 8 chances in 100 that the finding is a chance variation
c. There are 8 chances in 10 that the finding is true
d. There are 8 chances in 100 that the finding is biased Correct Answer-
B.
,When one variable precedes the other in time and the correlation
between them is high, which statement can be made with confidence?
a. The variable that comes earliest in time causes the other variable
b. There is a high level of association between the two variables
c. The two variables have an association with an outcome variable
d. There are no extraneous variables at work in the situation Correct
Answer-B
What does the statistic r2 represent?
a. What would happen if the variable were present at twice the levels
found
b. The chances that the variables are perfectly correlated
c. The proportion of variation in one variable that is accounted for by
variation in the other variable, and vice versa
d. What the correlation coefficient would be if the sample size were
twice as large Correct Answer-C
, What are the two dimensions that describe a relationship between two
variables?
a. Truth and consequences
b. Direction and strength
c. Strength and weakness
d. Increasing and decreasing variation Correct Answer-B
In a correlation study, the p value of a Pearson r statistic is 0.005. What
does this mean?
a. There is a small association between the two variables
b. There is a very small chance that the relationship between the two
variables is zero
c. The variable that is first in time determined .5% of the variation in the
other variable
d. Only 5% of the variables are the result of shared influences Correct
Answer-B
answers
The strength of association between two variables is indicated by which
statistical method?
a. Correlation coefficient
b. Cronbach's alpha
c. Dichotomous measurement
d. Histogram Correct Answer-A correlation coefficient
What does a p-value of 0.08 mean?
a. There are 8 chances in 100 that the finding is true
b. There are 8 chances in 100 that the finding is a chance variation
c. There are 8 chances in 10 that the finding is true
d. There are 8 chances in 100 that the finding is biased Correct Answer-
B.
,When one variable precedes the other in time and the correlation
between them is high, which statement can be made with confidence?
a. The variable that comes earliest in time causes the other variable
b. There is a high level of association between the two variables
c. The two variables have an association with an outcome variable
d. There are no extraneous variables at work in the situation Correct
Answer-B
What does the statistic r2 represent?
a. What would happen if the variable were present at twice the levels
found
b. The chances that the variables are perfectly correlated
c. The proportion of variation in one variable that is accounted for by
variation in the other variable, and vice versa
d. What the correlation coefficient would be if the sample size were
twice as large Correct Answer-C
, What are the two dimensions that describe a relationship between two
variables?
a. Truth and consequences
b. Direction and strength
c. Strength and weakness
d. Increasing and decreasing variation Correct Answer-B
In a correlation study, the p value of a Pearson r statistic is 0.005. What
does this mean?
a. There is a small association between the two variables
b. There is a very small chance that the relationship between the two
variables is zero
c. The variable that is first in time determined .5% of the variation in the
other variable
d. Only 5% of the variables are the result of shared influences Correct
Answer-B
