Multiple Choice Questions - Biostatistics

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The document contains multiple choice questions about biostatistics and public health dentistry. It includes questions about measures of central tendency such as mean, median, and mode. Other questions address correlation, scales of measurement, random sampling, statistical significance, and skewed distributions. The questions are intended as a learning tool for dental students and professionals.

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MCQs on
BIOSTATISTICS
PUBLIC HEALTH DENTISTRY

# The arithmetical average of a number of observations is
called :
A. Mean
B. Median
C. Range
D. All of the above
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# Which of the following correlates highest correlation
between variables ?
A. r= + 0.25
B. r= + 0.5
C. r= - 0.75
D. r= + 2
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Correlation coefficient (r) indicates the degree of correlation between
two variables. Its value ranges from -1 to +1. The correlation coefficient
is zero when there is no covariation between two variables.
Independent of the sign, the farther the ‘r’ value from ‘0’, the stronger
the relationship, i.e. -1 indicates perfect negative correlation whereas +1
indicates a perfect positive correlation. Since 0.75 is farther from 0 than
0.25 and 0.5, option C is the correct answer.
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# Which of the following is not a measure of central
tendency ?
A. Mean
B. Mode
C. Range
D. Median
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# # Father of Health Statistics is:
A. John Snow
B. John Graunt
C. Frederick Mc Kay
D. Pierre Fauchard
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# Ranking students from the individual with the highest
Grade points average (GPA) to the lowest is an example of:
A. Ordinal Scale
B. Nominal Scale
C. Interval Scale
D. Ratio Scale
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# # A random sample suggests that :
A. A person in a control group will not be a member of the
experimental group
B. Any member of a group to be studied has an equal
opportunity to be included in the study
C. Every nth name on a list is selected
D. Subjects are volunteers
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# A statistical test which indicates the chance or probability of an
observed difference between two means occurring by chance is
called:
A. Tests of significance
B. Means
C. Ratio
D. Normalcy
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# Best measure for central tendency in a highly skewed
distribution is :
A. Median
B. Mean
C. Mode
D. Range
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This is only a portion of the MCQs. For viewing
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Multiple Choice Questions - Biostatistics

1. MCQs on BIOSTATISTICS PUBLIC HEALTH DENTISTRY

2. # The arithmetical average of a number of observations is called : A. Mean B. Median C. Range D. All of the above www.dentaldevotee.com

3. # The arithmetical average of a number of observations is called : A. Mean B. Median C. Range D. All of the above www.dentaldevotee.com

4. # Which of the following correlates highest correlation between variables ? A. r= + 0.25 B. r= + 0.5 C. r= - 0.75 D. r= + 2 www.dentaldevotee.com

5. # Which of the following correlates highest correlation between variables ? A. r= + 0.25 B. r= + 0.5 C. r= - 0.75 D. r= + 2 www.dentaldevotee.com

6. Correlation coefficient (r) indicates the degree of correlation between two variables. Its value ranges from -1 to +1. The correlation coefficient is zero when there is no covariation between two variables. Independent of the sign, the farther the ‘r’ value from ‘0’, the stronger the relationship, i.e. -1 indicates perfect negative correlation whereas +1 indicates a perfect positive correlation. Since 0.75 is farther from 0 than 0.25 and 0.5, option C is the correct answer. www.dentaldevotee.com

7. # Which of the following is not a measure of central tendency ? A. Mean B. Mode C. Range D. Median www.dentaldevotee.com

8. # Which of the following is not a measure of central tendency ? A. Mean B. Mode C. Range D. Median www.dentaldevotee.com

9. # # Father of Health Statistics is: A. John Snow B. John Graunt C. Frederick Mc Kay D. Pierre Fauchard www.dentaldevotee.com

10. # # Father of Health Statistics is: A. John Snow B. John Graunt C. Frederick Mc Kay D. Pierre Fauchard www.dentaldevotee.com

11. # Ranking students from the individual with the highest Grade points average (GPA) to the lowest is an example of: A. Ordinal Scale B. Nominal Scale C. Interval Scale D. Ratio Scale www.dentaldevotee.com

12. # Ranking students from the individual with the highest Grade points average (GPA) to the lowest is an example of: A. Ordinal Scale B. Nominal Scale C. Interval Scale D. Ratio Scale www.dentaldevotee.com

13. # # A random sample suggests that : A. A person in a control group will not be a member of the experimental group B. Any member of a group to be studied has an equal opportunity to be included in the study C. Every nth name on a list is selected D. Subjects are volunteers www.dentaldevotee.com

14. # # A random sample suggests that : A. A person in a control group will not be a member of the experimental group B. Any member of a group to be studied has an equal opportunity to be included in the study C. Every nth name on a list is selected D. Subjects are volunteers www.dentaldevotee.com

15. # A statistical test which indicates the chance or probability of an observed difference between two means occurring by chance is called: A. Tests of significance B. Means C. Ratio D. Normalcy www.dentaldevotee.com

16. # A statistical test which indicates the chance or probability of an observed difference between two means occurring by chance is called: A. Tests of significance B. Means C. Ratio D. Normalcy www.dentaldevotee.com

17. # Best measure for central tendency in a highly skewed distribution is : A. Median B. Mean C. Mode D. Range www.dentaldevotee.com

18. # Best measure for central tendency in a highly skewed distribution is : A. Median B. Mean C. Mode D. Range www.dentaldevotee.com

19. Our YouTube Channel Contact: dentosphere.worldofdentistry@gmail.com www.facebook.com/DentCareNepal www.dentaldevotee.com www.youtube.com/DentCareNepal This is only a portion of the MCQs. For viewing the complete list of MCQs, please visit: bit.ly/dentistrymcqs

Multiple Choice Questions - Biostatistics

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