PSYC 210 Final Exam NEWEST 2026-2027 ACTUAL
EXAM WITH COMPLETE 350 QUESTIONS AND
CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) ALREADY GRADED A+
PROFESSOR VERIFIED
A researcher runs a multiple regression model with anxiety as the outcome and number of cups
of coffee and number of hours slept as the predictors. The unstandardized slope for cups of
coffee was estimated to be -0.2. What is a correct interpretation of this number?
A. For each additional cup of coffee consumed, anxiety is expected to decrease by 0.2 points.
B. For each additional cup of coffee consumed, anxiety is expected to decrease by 0.2 points,
holding constant number of hours slept.
C. There is a weak, negative correlation between cups of coffee consumed and anxiety.
D. Coffee consumption explains 20% of the variance in anxiety in the negative direction -
CORRECT ANSWER: B
In multiple regression, we can use unstandardized regression coefficients to:
A. see which predictor is the strongest/best predictor
B. see which outcome is the best
C. give us an indicator of relationship strength
,D. determine the slope of the line between two variables - CORRECT ANSWER: D
How do we determine the significance of the slope in regression?
A. examine the difference between the predicted value and the overall mean
B. Examine the different between the predicted value of an outcome and the actual observed
value
C. Examine the correlation between variables
D. Run a t-test for the slope - CORRECT ANSWER: D
A researcher runs a multiple regression model with satisfaction with life as the outcome and
sense of community and self-efficacy as the predictors. They obtain the following results: Sense
of community: beta = 3.0, p = .02 Self-efficacy: beta = 3.0, p = .0001 Which, if any, is the
stronger predictor of satisfaction with life and why?
A. Sense of community because it has a larger value of beta
B. Self-efficacy because it has a smaller p-value
C. They are equally strong because they have the same value of beta
D. There is not enough information to make a decision - CORRECT ANSWER: C
r-squared can be interpreted as:
,A. the Y unit increase for a one unit increase in X
B. The slope of the line between X and Y
C. The proportion of unexplained variance between X and Y
D. The proportion of variance in Y that is accounted for/explained by X - CORRECT ANSWER:
D
A correlation coefficient of -0.32 tells us
A. there is a moderately strong negative relationship between x and y
B. there is a strong positive relationship between x and y
C. the relationship between x and y is not linear
D. we have calculated the correlation coefficient incorrectly - CORRECT ANSWER: A
Correlation coefficients can be impacted by a number of factors. Which of the following
statements is FALSE?
A. Curvilinear effects will strengthen a correlation
B. Homoscedasticity will improve interpretability of a correlation
C. Extreme scores can inflate a correlation
, D. Restricting range will generally reduce a correlation - CORRECT ANSWER: A
What measure of effect size is preferred for a t-test?
A. Cohen's d
B. r
C. r-squared
D. omega-squared - CORRECT ANSWER: A
A 95% confidence interval around a given sample statistic can be interpreted as:
A. We are 95% confident the statistic is significant
B. We are 95% confident in the generalization of our findings
C. We can reject the null hypothesis
D. We are 95% confident the true population parameter is between the upper and lower bounds
of the interval - CORRECT ANSWER: D
If I was interested in determining if two means differed and my 95% confidence interval ranged
from -5.24 to 12.59, what would I conclude?
A> Reject the null hypothesis because the confidence interval does not include the value of my
null hypothesis (zero)
B. Reject the null hypothesis because the confidence interval does not include the value of my
sample means
EXAM WITH COMPLETE 350 QUESTIONS AND
CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) ALREADY GRADED A+
PROFESSOR VERIFIED
A researcher runs a multiple regression model with anxiety as the outcome and number of cups
of coffee and number of hours slept as the predictors. The unstandardized slope for cups of
coffee was estimated to be -0.2. What is a correct interpretation of this number?
A. For each additional cup of coffee consumed, anxiety is expected to decrease by 0.2 points.
B. For each additional cup of coffee consumed, anxiety is expected to decrease by 0.2 points,
holding constant number of hours slept.
C. There is a weak, negative correlation between cups of coffee consumed and anxiety.
D. Coffee consumption explains 20% of the variance in anxiety in the negative direction -
CORRECT ANSWER: B
In multiple regression, we can use unstandardized regression coefficients to:
A. see which predictor is the strongest/best predictor
B. see which outcome is the best
C. give us an indicator of relationship strength
,D. determine the slope of the line between two variables - CORRECT ANSWER: D
How do we determine the significance of the slope in regression?
A. examine the difference between the predicted value and the overall mean
B. Examine the different between the predicted value of an outcome and the actual observed
value
C. Examine the correlation between variables
D. Run a t-test for the slope - CORRECT ANSWER: D
A researcher runs a multiple regression model with satisfaction with life as the outcome and
sense of community and self-efficacy as the predictors. They obtain the following results: Sense
of community: beta = 3.0, p = .02 Self-efficacy: beta = 3.0, p = .0001 Which, if any, is the
stronger predictor of satisfaction with life and why?
A. Sense of community because it has a larger value of beta
B. Self-efficacy because it has a smaller p-value
C. They are equally strong because they have the same value of beta
D. There is not enough information to make a decision - CORRECT ANSWER: C
r-squared can be interpreted as:
,A. the Y unit increase for a one unit increase in X
B. The slope of the line between X and Y
C. The proportion of unexplained variance between X and Y
D. The proportion of variance in Y that is accounted for/explained by X - CORRECT ANSWER:
D
A correlation coefficient of -0.32 tells us
A. there is a moderately strong negative relationship between x and y
B. there is a strong positive relationship between x and y
C. the relationship between x and y is not linear
D. we have calculated the correlation coefficient incorrectly - CORRECT ANSWER: A
Correlation coefficients can be impacted by a number of factors. Which of the following
statements is FALSE?
A. Curvilinear effects will strengthen a correlation
B. Homoscedasticity will improve interpretability of a correlation
C. Extreme scores can inflate a correlation
, D. Restricting range will generally reduce a correlation - CORRECT ANSWER: A
What measure of effect size is preferred for a t-test?
A. Cohen's d
B. r
C. r-squared
D. omega-squared - CORRECT ANSWER: A
A 95% confidence interval around a given sample statistic can be interpreted as:
A. We are 95% confident the statistic is significant
B. We are 95% confident in the generalization of our findings
C. We can reject the null hypothesis
D. We are 95% confident the true population parameter is between the upper and lower bounds
of the interval - CORRECT ANSWER: D
If I was interested in determining if two means differed and my 95% confidence interval ranged
from -5.24 to 12.59, what would I conclude?
A> Reject the null hypothesis because the confidence interval does not include the value of my
null hypothesis (zero)
B. Reject the null hypothesis because the confidence interval does not include the value of my
sample means
