1
MPH EXAM LATEST VERSION -2025/2026- 100+ QUESTIONS
AND VERIFIED ANSWERS ALL THE BEST
True or False? The mean is the best measure of central tendency for a data set
measuring low-density lipoprotein (LDL) in which the individual measures of LDL
were 100, 101, 105, 107, 109, 110, and 111.
True
True or False? An r value of -0.8 indicates a weak negative association
False
The following table displays descriptive statistics on the participants involved in a
clinical trial.
Characteristic New Compound Placebo p-value
Mean age (years) 47.2 46.1 0.7564
Men (%) 44% 59% 0.0215
Mean educational level (years) 13.1 14.2 0.6898
Mean annual income $36,560 $37,470 0.3546
Mean body mass index (BMI) 24.7 25.1 0.0851
A study is designed to evaluate the impact of a daily multivitamin on students'
academic performance. One hundred sixty students are randomly assigned to
receive either the multivitamin or a placebo and are instructed to take the
assigned drug daily for 20 days. On day 20, each student takes a standardized
exam and the mean exam scores are compared between groups. This study is an
example of a
Randomized Control Trial
When estimating sample size, it is not important for researchers to account for
attrition or loss of participants during follow-up.
, 2
True
Five hundred people are enrolled in a 10-year cohort study. At the start of the
study, 50 have diagnosed CVD. Over the course of the study, 40 people who were
free of CVD at baseline develop CVD. What is the cumulative incidence of CVD
over 10 years?
A. Cumulative incidence of CVD over 10 years
Cumulative incidence 40/450=.0888 x 100=8.9%
B. The prevalence of CVD at base line
a. Prevalence baseline=50/500 .1 x 100= 10%
C. The prevalence of CVD at ten years is
a. Prevalence 10 year 90/500= .18 x 100=18%
What is the median blood glucose level of the following data set collected from 8
individuals: 89, 95, 99, 102, 107, 108, 111, and 119?
Median=107
Select which characteristic(s) are significantly different between groups?
There is a statistically significant difference in the proportions of male (p=.0215)
and a marginally significant difference in mean body mass index (p=.0851). None
of the other characteristics are significantly different between groups using a 5%
level of significance
With a binomial distribution with n = 25 and p = 0.48, which is larger?
P(12 successes)
Examples of non probability sampling includes all of the following EXCEPT:
These are Non-Probability
Quota sampling
MPH EXAM LATEST VERSION -2025/2026- 100+ QUESTIONS
AND VERIFIED ANSWERS ALL THE BEST
True or False? The mean is the best measure of central tendency for a data set
measuring low-density lipoprotein (LDL) in which the individual measures of LDL
were 100, 101, 105, 107, 109, 110, and 111.
True
True or False? An r value of -0.8 indicates a weak negative association
False
The following table displays descriptive statistics on the participants involved in a
clinical trial.
Characteristic New Compound Placebo p-value
Mean age (years) 47.2 46.1 0.7564
Men (%) 44% 59% 0.0215
Mean educational level (years) 13.1 14.2 0.6898
Mean annual income $36,560 $37,470 0.3546
Mean body mass index (BMI) 24.7 25.1 0.0851
A study is designed to evaluate the impact of a daily multivitamin on students'
academic performance. One hundred sixty students are randomly assigned to
receive either the multivitamin or a placebo and are instructed to take the
assigned drug daily for 20 days. On day 20, each student takes a standardized
exam and the mean exam scores are compared between groups. This study is an
example of a
Randomized Control Trial
When estimating sample size, it is not important for researchers to account for
attrition or loss of participants during follow-up.
, 2
True
Five hundred people are enrolled in a 10-year cohort study. At the start of the
study, 50 have diagnosed CVD. Over the course of the study, 40 people who were
free of CVD at baseline develop CVD. What is the cumulative incidence of CVD
over 10 years?
A. Cumulative incidence of CVD over 10 years
Cumulative incidence 40/450=.0888 x 100=8.9%
B. The prevalence of CVD at base line
a. Prevalence baseline=50/500 .1 x 100= 10%
C. The prevalence of CVD at ten years is
a. Prevalence 10 year 90/500= .18 x 100=18%
What is the median blood glucose level of the following data set collected from 8
individuals: 89, 95, 99, 102, 107, 108, 111, and 119?
Median=107
Select which characteristic(s) are significantly different between groups?
There is a statistically significant difference in the proportions of male (p=.0215)
and a marginally significant difference in mean body mass index (p=.0851). None
of the other characteristics are significantly different between groups using a 5%
level of significance
With a binomial distribution with n = 25 and p = 0.48, which is larger?
P(12 successes)
Examples of non probability sampling includes all of the following EXCEPT:
These are Non-Probability
Quota sampling
