Informatics Final Exam UPDATED ACTUAL Questions and
CORRECT Answers
B. Most medical data follows unimodal distributions. Which of the following statements is true?
D. Most medical data follows positively skewed A. Most medical data follows multimodal distributions.
distributions. B. Most medical data follows unimodal distributions.
C. If the tail on the right is of similar length to the tail on the left, the distribution is
skewed.
D. Most medical data follows positively skewed distributions.
B. It estimates intervals with different levels of Which of the following statements regarding p-value is true?
confidence. A. It shows strong evidence to reject the null hypothesis if it has a value between
D. It is the end result of hypothesis testing. 0.1 and 0.5.
B. It estimates intervals with different levels of confidence.
C. It is the measure of the central tendency of the distribution.
D. It is the end result of hypothesis testing.
A. the average of the square of the deviations about the Standard deviation is:
sample mean A. the average of the square of the deviations about the sample mean
C. the square root of the variance B. a measure of central tendency
C. the square root of the variance
D. always equal to the variance
A. The median is the second quartile. Which of the following statements regarding central tendency is true?
B. The three quartiles divide the distribution into four A. The median is the second quartile.
equal parts. B. The three quartiles divide the distribution into four equal parts.
C. The most frequently occurring value is called the C. The most frequently occurring value is called the mode of the distribution.
mode of the distribution. D. The mean is the second quartile.
D. The characteristics of the sample should mimic those Which of the following statements regarding samples is true?
of the population. A. A sample is larger than the population.
B. A sample is always the same as the population.
C. Random sampling is always feasible.
D. The characteristics of the sample should mimic those of the population.
A. patient data Which of the following types of data is used by a HIS?
C. administrative data A. patient data
B. medical terminal dictionaries
C. administrative data
D. research data
D. unrestricted access to persistent data The DBMS (Data Base Management System) does not allow:
A. multi-user access to persistent data
B. single-user access to persistent data
C. concurrent access to persistent data
D. unrestricted access to persistent data
, B. PAN (Personal Arena Network) Related to their coverage, the data transmission networks are classified as:
D. MAN (Metropolitan Area Network) A. CAN (Campus Arena Network)
B. PAN (Personal Arena Network)
C. NAN (Neighborhood Area Network)
D. MAN (Metropolitan Area Network)
A. a way of storing data The DBMS (Data Base Management System) provides users:
C. a way to access data A. a way of storing data
B. a distribution method
C. a way to access data
D. a way of copying data
A. The intercept and the slope are parameters of the Which of the following statements regarding simple linear regression is true?
linear regression equation. A. The intercept and the slope are parameters of the linear regression equation.
C. It is an equation of a straight line. B. It is used to predict one variable (y) based on an observed variable (x).
C. It is an equation of a straight line.
D. It involves choosing the line that minimizes the distance from the to itself in the
y direction.
A. can have values between 1 and -1 The correlation coefficient:
B. is 0 when there is no linear relationship between the A. can have values between 1 and -1
variables B. is 0 when there is no linear relationship between the variables
C. has a maximum value of 1 and a minimum value of -1 C. has a maximum value of 1 and a minimum value of -1
D. measures the direction of a linear relationship
A. a .txt file with daily blood glucose measurements of a Which of the following examples belong to the database group?
patient A. a .txt file with daily blood glucose measurements of a patient
B. a .doc file with the list of shifts in the surgery B. a .doc file with the list of shifts in the surgery department
department C. a .xls file with the grades for Medical Informatics
C. a .xls file with the grades for Medical Informatics D. a .ppt file with the course material for Medical Informatics
A. can be applied only if the sampled data follows a The 68-95-99.7 rule for normal distribution:
normal distribution A. can be applied only if the sampled data follows a normal distribution
C. can be represented using a graphical representation B. states that 99.7% of the observations fall within one standard deviation of the
of normality mean
C. can be represented using a graphical representation of normality
D. states that 68% of the observations in a normal distribution are in the interval (u-
20, u+20)
A. flat Data structures can be:
B. object oriented A. flat
C. hierarchical B. object oriented
C. hierarchical
D. concatenated
A. It is an extension of binary data to include more than Which of the following statements regarding categorical data is true?
two possible values. A. It is an extension of binary data to include more than two possible values.
C. It is either nominal or ordinal categorical data. B. It can have only two values, "yes" or "no."
C. It is either nominal or ordinal categorical data.
D. It is a result of incremental measurements.
CORRECT Answers
B. Most medical data follows unimodal distributions. Which of the following statements is true?
D. Most medical data follows positively skewed A. Most medical data follows multimodal distributions.
distributions. B. Most medical data follows unimodal distributions.
C. If the tail on the right is of similar length to the tail on the left, the distribution is
skewed.
D. Most medical data follows positively skewed distributions.
B. It estimates intervals with different levels of Which of the following statements regarding p-value is true?
confidence. A. It shows strong evidence to reject the null hypothesis if it has a value between
D. It is the end result of hypothesis testing. 0.1 and 0.5.
B. It estimates intervals with different levels of confidence.
C. It is the measure of the central tendency of the distribution.
D. It is the end result of hypothesis testing.
A. the average of the square of the deviations about the Standard deviation is:
sample mean A. the average of the square of the deviations about the sample mean
C. the square root of the variance B. a measure of central tendency
C. the square root of the variance
D. always equal to the variance
A. The median is the second quartile. Which of the following statements regarding central tendency is true?
B. The three quartiles divide the distribution into four A. The median is the second quartile.
equal parts. B. The three quartiles divide the distribution into four equal parts.
C. The most frequently occurring value is called the C. The most frequently occurring value is called the mode of the distribution.
mode of the distribution. D. The mean is the second quartile.
D. The characteristics of the sample should mimic those Which of the following statements regarding samples is true?
of the population. A. A sample is larger than the population.
B. A sample is always the same as the population.
C. Random sampling is always feasible.
D. The characteristics of the sample should mimic those of the population.
A. patient data Which of the following types of data is used by a HIS?
C. administrative data A. patient data
B. medical terminal dictionaries
C. administrative data
D. research data
D. unrestricted access to persistent data The DBMS (Data Base Management System) does not allow:
A. multi-user access to persistent data
B. single-user access to persistent data
C. concurrent access to persistent data
D. unrestricted access to persistent data
, B. PAN (Personal Arena Network) Related to their coverage, the data transmission networks are classified as:
D. MAN (Metropolitan Area Network) A. CAN (Campus Arena Network)
B. PAN (Personal Arena Network)
C. NAN (Neighborhood Area Network)
D. MAN (Metropolitan Area Network)
A. a way of storing data The DBMS (Data Base Management System) provides users:
C. a way to access data A. a way of storing data
B. a distribution method
C. a way to access data
D. a way of copying data
A. The intercept and the slope are parameters of the Which of the following statements regarding simple linear regression is true?
linear regression equation. A. The intercept and the slope are parameters of the linear regression equation.
C. It is an equation of a straight line. B. It is used to predict one variable (y) based on an observed variable (x).
C. It is an equation of a straight line.
D. It involves choosing the line that minimizes the distance from the to itself in the
y direction.
A. can have values between 1 and -1 The correlation coefficient:
B. is 0 when there is no linear relationship between the A. can have values between 1 and -1
variables B. is 0 when there is no linear relationship between the variables
C. has a maximum value of 1 and a minimum value of -1 C. has a maximum value of 1 and a minimum value of -1
D. measures the direction of a linear relationship
A. a .txt file with daily blood glucose measurements of a Which of the following examples belong to the database group?
patient A. a .txt file with daily blood glucose measurements of a patient
B. a .doc file with the list of shifts in the surgery B. a .doc file with the list of shifts in the surgery department
department C. a .xls file with the grades for Medical Informatics
C. a .xls file with the grades for Medical Informatics D. a .ppt file with the course material for Medical Informatics
A. can be applied only if the sampled data follows a The 68-95-99.7 rule for normal distribution:
normal distribution A. can be applied only if the sampled data follows a normal distribution
C. can be represented using a graphical representation B. states that 99.7% of the observations fall within one standard deviation of the
of normality mean
C. can be represented using a graphical representation of normality
D. states that 68% of the observations in a normal distribution are in the interval (u-
20, u+20)
A. flat Data structures can be:
B. object oriented A. flat
C. hierarchical B. object oriented
C. hierarchical
D. concatenated
A. It is an extension of binary data to include more than Which of the following statements regarding categorical data is true?
two possible values. A. It is an extension of binary data to include more than two possible values.
C. It is either nominal or ordinal categorical data. B. It can have only two values, "yes" or "no."
C. It is either nominal or ordinal categorical data.
D. It is a result of incremental measurements.
