問題一覧
1
The following statements are true about DICOM
it is a standard for managing data obtained through medical imaging, it includes a communication protocol, it includes a definition of data format, it is a module in HIS
2
Personal health record is
an application through which patients can securely and confidentially access, manage and share their health information
3
The WWW acronym is found in
the web page access syntax
4
Regarding discrete quantitative variables
the frequency distribution can be obtained directly by counting how many times each value appears, the variable's values are always in order, they can be graphically represented using a histogram, they are the result of a measurement or are obtained by counting
5
Estimating of data variability can be done with
standard deviation, range, variance
6
The majority of medical data follow
positively skewed distribution, unimodal distributions, symmetrical distribution
7
The following statements about the Z scale are true
it allows efficient presenting of results, scores from all scales can be converted to a score on the Z scale, it is standard scale in statistics
8
The p-value is
the end result of hypothesis testing, not the probability that the null hypothesis is true
9
A statistically significant difference
is always obtained when the p value is less than 0.05, happens if the data is not consistent with the null hypothesis
10
The following are true about linear regression
it is an equation of a straight line, the expression result is the outcome or dependent variable
11
The correlation coefficient
is sometimes called the Pearson's correlation coefficient, is negative when small values of a variable are associated to high values of another variables
12
Related to their coverage (which are also wireless), the data transmission networks are classified as
WAN, MAN, LAN, PAN
13
Wired
ethernet, fiber channel, history (=token ring, ATM, frame relay)
14
Cloud computing deployment models
public, private, hybrid, community
15
HIS – hospital information system includes functionality for
patient management in hospitals or clinics, the security of the data system, managing lab tests, managing patient-related costs
16
HIS must take into account
all aspects of functioning of a hospital, all activities of the hospital groups, all internal groups of people, all groups of external foreign individuals
17
The following applications are used for statistically analyzing data
EpiInfo, MS excel, statistica
18
The following can be associated with the “Cloud Computing” term
distributed group of computing services, distributed group of applications, distributed group for data storage
19
The standard error
is used to state how close the computed statistical value is to the real value, is the standard deviation of the sample distribution
20
Student’s t-test
has a statistic that follows student’s t distribution, can be represented by a graphical representation of normality, can be applied to small sample sizes
21
The following statements about categorical data are true
an extension of binary data to include more than 2 possible values, it can have only two values, ‘’yes’’ or ‘’no’’, it is either nominal or ordinal categorical data
22
Estimating of data variability can be done with
interquartile range, standard deviation
23
The WWW acronym is
a set of standards used to tag the elements of a hypertext document, a meta-language widely used today to define particular types of ‘’computerized’’ complex documents, a web browser used to view web pages, a system of interlinked hypertext documents that can be accessed via the Internet
24
The following statements about the z score are true
convert observation from different distributions with different measurement scales to comparable units, it can’t be used to compute z-scores for data arising from any type of distribution, it is a measure of the relative distance of a single observation in a data distribution relative to the mean of the distribution
25
Which from the following are Cloud Computing deployment models
public, hybrid
26
HIS (Health Information System) must take into account
all aspects of functioning of a hospital, all activities of the hospital groups, all internal groups of people, all groups of external, foreign individuals
27
The following statements are true
most medical data follows unimodal distributions, most medical data follows positively skewed distributions
28
The following statements are true about p-value
is the end result of hypothesis testing, estimates intervals with different levels of confidence
29
The standard deviation is
the average of the square of the deviations about the sample mean, the square root of the variance
30
The following statements are true about central tendency
the median is the second quartile, the three quartiles divide the distribution into four equal parts, the most frequently occurring value is called the mode of the distribution
31
The following statement is true about samples
the characteristics of the sample should mimic those of the population
32
The following types of data are used by HIS
patient data, administrative data
33
The correlation coefficient
can have values between 1 and -1, is zero when is no linear relationship between variables, has a maximum value of 1 and a minimum value of -1
34
Which of the following examples belong to the database group
a .txt file with daily blood glucose measurements of a patient, a .doc file with the list of shifts on surgery department, a .xls file with the grades to discipline Medical Informatics
35
The 68-95-99.7 rule for the Normal Distribution
can be applied only if the sampled data follows a normal distribution, can be represented using a graphical representation of normality
36
The data structures can be one of the following types
flat, object-oriented, hierarchical
37
A DBMS (Data Base Management System) does not allow
unrestricted access to persistent data
38
Related to their coverage, the data transmission networks are classified as
PAN (Personal Area Network), MAN (Metropolitan Area Network)
39
A DBMS (Data Base Management System) provides users
a way of storing data, a way to access data
40
The following is true about simple linear regression
the intercept and the slope are parameters of the linear regression equation, it is used to predict one variable y, based on an observed variable, x, is is an equation of a straight line, it involves choosing the line that minimizes the distance from the point to itself in the y direction
41
90% confidence intervals
can potentially be computed in different ways, depending on the problems
42
The following are true about linear regression
it is a module in HIS
43
Estimating of data variability can be done with
variance , interquartile range, standard deviation
44
The following statements about the WWW acronym are true
it is a system of interlinked hypertext documents that can be accessed via the internet
45
The following statements are true
most medical data follows positively skewed distributions, if the sail on the right is not of similar length to the tail on the left the distribution is skewed, if the tail on the right is of similar length to the tail on the left the midline the mean and the mode are equal
46
The following statements are true about p-value
shows strong evidence to reject the null hypothesis if it has a value below 0.05, is the end result of hypothesis testing, estimates intervals with different levels of confidence
47
The standard deviation is
the square of average the of the deviation about the sample mean, the square root of the variance
48
The following statements are true about central tendency
in a normal distribution mean median and module are equal, the most frequently occurring value is called the mode of the distribution
49
The following statements are true about samples
the characteristics of the sample should mimic those of the population, a sample is smaller than the population, the central limit theorem refers to the sampling distribution, the samples can be randomly generated
50
The following types of data are not used by HIS
medical terminology dictionaries, environmental data
51
The following statements about the normal distribution are true
it is a symmetrical distribution
52
Which from the following are Cloud Computing deployment models
private, hybrid
53
The standard deviation is
the average of the square of the deviations about the sample mean, the square root of the variance
54
The correlation coefficient
is zero when is no relationship between variables
55
Which of the following examples belong to the database group
a dbf file with the phone number of students
56
The number of individuals having a specific quality is called
the frequency or absolute frequency
57
The following are true about the boxplots
it is a tool to display key characteristics of a dataset
58
The confidence intervals
determine a range that is likely to contain the true population value, can be interpreted as a range of plausible vales for the unknown truth
59
The following statements are true about samples
the characteristics of the sample should mimic those of population, a sample is smaller than the population