computing

Info is measured in ?

bits
megabits per second
bytes per second

bits

information flow

which a person takes by receptors is equal to approx

50 baud
10 baud
105 baud

the dimensional model is a specialised adaptation of

hierarchical model
network model
relational model

relational model

what type of databases does the ACCESS software product support

networking
hierarchical
relational

relational

information flow is measured in

bit per second
bits

bit per second

true or false : one of the basic tasks of medical informatics is statistical processing of medical data

true

what kind of memory loses the information after turning off the computer

main memory/storage
mass storage

main memory/storage

hardware of the computer is

computer devices
programs

computer devices

one gigabyte is

2^10 byteselectric net
2^20 bytes
2^30 bytes
10^10 bytes
10^8 bytes

2^30 bytes

the database is

Collection of various data designed to meet the information needs of one or more users
Collection of logically related data designed to meet the information needs of one or more users
Collection of unstructured data designed to meet the information needs of one or more users

collection of logically related data designed to meet the information needs of one or more users

a sample of patients studied in 2 different groups can be considered as ..

2 parallel samples
2 dependent samples
2 independent samples
2 opposite samples

2 independent samples

the null hypothesis in the Kolmogorov Smirnov method is

There is no statistically significant effect of the factor on the variable consequence
The distribution of the variable is not different from the normal distribution
The mean rank in one group is not different from the mean rank in the other group
The mean value in one group is not different from the mean in the other group
There is no correlation between the variable

the distribution of the variable is not different from the normal distribution

the MEDIAN is a statistical characteristic of

distribution
central tendency
dispersion

central tendency

which hypothesis is subject to statistical verification

the working hypothesis
the alternative hypothesis
the null hypothesis
the null and the alternative hypothesis

null hypothesis

what type of error does the alpha value help avoid

type 1 error

what is a quantitative variable

can be measured or used in a histogram

what do you put in the ordinate axis

x-axis data set measure or value/ y-axis frequency of the value

how are the values quantified in a histogram

qualitative variable/data

standard deviation is a property of dispersion

statistical characteristic or its a dataset relative to its mean

What type of addressing is used for cell B$3

Mixed

What type of addressing is used for cell H8

Relative

What type of addressing is used for cell $D$13

Absolute

Please write the relative addressing for a cell: column D and row 8

D8

Please write the absolute address for a cell: column C and row 10

$C$10

Please write the relative addressing for column F and the absolute addressing for row 6

F$6

Please write the absolute addressing for column M and the relative addressing for row 16

$M16

Indicate the possible formulas for calculating the arithmetic mean for cells A3 to A18

= AVERAGE (A3: A18) or
= SUM (A3: A18) / COUNT (A3: A18)

Indicate the possible formulas for calculating the sum of cells from BIO to B13

= SUM (B10: B13) or
= B10 + B11 + B12 + B13

What type of chart is suitable for presenting time series

Line Chart

What type of chart is suitable for presenting qualitative variables

pie chart or bar chart

When is it appropriate to use a radar chart?

For presenting of quantitative variable for more groups of one or more qualitative variables.

List the main objects that are created in MSACCESS

Tables

Please indicate those objects in MSACCESS where a calculation field can be added

Tables

Please indicate what aggregated information that can be calculated in MSACCESS.

Sum

Where in MSACESS can aggregate information be displayed?

Reports

What is energy is measured in

bits

What is energy flow is measured in

bits per second

Characteristic of the standard deviation

dispersion

What data models you know?

Flat
Hierarchichal
Network
Relational

Who are the main body devices of the computer

-CPU
-main memory
-mass storage

What kind of computer language is easy for using?

-The machine languages

Formatting of paragraphs includes

-Alignment
-Line spacing

The informatics unites areas of:

- Matematics

Operational systems belong to

-main software

What are the mean components expert system?

inference engine
knowledge base

what protocol is more reliable?

-TCP

By Internet we can send

-audio files
-text
-video

Multimedia

Don't requires computer control

Internet uses

-telephone net
-cables

Windows allows to work

more than 8 programs

The first applying of microprocessor was in computers of:

4 generation

What kind of the memory is more quick?

-Main memory

The idea of programming belongs to

Charles Babbage

statistical characteristics of dispersion

range
mode
standard deviation
mean
median
asymmetry of coefficient
coefficient of excess
standard error of mean

range

standard deviation

the normal distribution is

theoretical distribution
empirical distribution
dichotomous distribution
correlation distribution

theoretical distribution

error of the first type is the probability that

We reject the alternative hypothesis when it is true
We accept the alternative hypothesis when it is
true
We accept the null hypothesis when it is true
We reject the null hypothesis when it is true

we reject the null hypothesis when it is true

the null hypothesis of the mann whitney test is

There is no correlation between the variables
There is no statistically significant effect of the factor on the variable consequence
The mean value in one group is not different from the mean in the other group
The mean rank in one group is not different from the mean rank in the other group
The distribution of the variable is not different from the normal distributionv

The mean value in one group is not different from the mean in the other group

The null hypothesis in the Wilcoxon-test is?

There is no statistically significant effect of the factor on the variable consequence
The distribution of the variable is not different from the normal distribution
There is no correlation between the variables
There is no difference between mean values at the beginning and end of the study
There is no difference between mean ranks at the beginning and end of the study

There is no difference between mean values at the beginning and end of the study

When a variable is different from normal distribution

we describe it with?

Median
Standard deviation
Mode
Mean

the STANDARD DEVIATION is a statistical characteristic of

distribution
central tendency
dispersion

dispersion

Method of Mann-Whitney is?

Nonparametric test for 2 related samples
Parametric test for 2 related samples
Parametric test for 2 independent samples
Nonparametric test for 2 independent samples

Nonparametric test for 2 independent samples

A variable is measured on the ordinal scale if it is:

Qualitative variable
Quantitative variable
Calculated by a formula
Measured on the ordinal axis of a coordinate system

Qualitative variable

What determines the type of critical area when testing the hypothesis?

From the alternative hypothesis
From the null and alternative hypothesis
From the null hypothesis
It does not depend on the hypothesis

From the null hypothesis

The power of the statistical test depends on?

Systematic error
First type error
Second type error
Error measuring results

Second type error

The distribution of a variable obtained by measuring the values study is what type?

Empirical distribution
Theoretical distribution
Correlation distribution
Dichotomous distribution

Empirical distribution

When the probability of guarantee increases

the length of the confidence interval?

Increases
Decreases
Without change

A variable is measured on the nominal scale if it is

Presented with the presence or absence of a property
Quantitative variable
Qualitative variable
Presented by the price

Qualitative variable

A variable is measured on the interval scale if it is?

Qualitative variable
Quantitative variable
Presented by intervals
Presented by groups

Quantitative variable

The MEAN is a statistical characteristic for measuring?

The dispersion
The central tendency
The distribution

The central tendency

The quantitative variables are?

Which can be combined
Containing labels or groups
Which can be separared
Which can be measured

Which can be measured

Pie-charts are suitable for presenting?

Qualitative variables
Variables expressing price
Variables represented by relationships -Quantitative variables

Qualitative variables

Method of Wilcoxon is?

Nonparametric test for 2 independent samples
Parametric test for 2 related samples
Parametric test for 2 independent samples
Nonparametric test for 2 related samples

Nonparametric test for 2 related samples

Representative samples are?

A subset of the population selected on a nesting basis
A subset of the population selected not randomly and representative
A subset of Population

randomly selected and representative.
A subset of the population randomly selected and representative
A subset of the population

The statistical characteristics of the central tendency are?

Coefficient of excess
Standard error of mean
Mode
Median
Standard deviation
Mean
Range
Asymmetry coefficient

Mode
Median
Mean

The null hypothesis in the Mann-Whitney test is?

There is no correlation between the variables
There is no statistically significant effect of the factor on the variable consequence
The mean value in one group is not different from the mean in the other group
The mean rank in one group is not different from the mean rank in the other group
The distribution of the variable is not different from the normal distribution

The mean value in one group is not different from the mean in the other group

When a variable is different from normal distribution

we describe it with?

standard deviation
median
mode
mean

The null hypothesis of the t-test is?

The distribution of the variable is not different from the normal distribution
There is no statistically significant effect of the factor on the variable consequence
The mean value in one group is not different from the mean in the other group
The mean rank in one group is not different from the mean rank in the other group
There is no correlation between the variables

The distribution of the variable is not different from the normal distribution

When we compare two means (alpha = 0.05) and reject the null hypothesis

the conclusion for a statistically significant difference is true?

For the whole population
For the whole population (with 5% probability of error)
Only for the sample (with 5% probability of error)
Only for the sample

The null hypothesis in the test ANOVA is?

The mean rank in one group is not different from the mean rank in the other group
The mean value in one group is not different from the mean value in the other group
The distribution of the variable is not different from the normal distribution -
There is no correlation between the variables
There is no statistically significant effect of the factor on the variable consequence

The mean value in one group is not different from the mean value in the other group

The error of second type is the probability that?

We accept the null hypothesis when it is not true
We accept the alternative hypothesis when it is true
We reject the alternative hypothesis when it is true
We reject the null hypothesis when it is true

We accept the null hypothesis when it is not true

What is a quantitative variable?

Can be measured in a histogram

What do you put in the ordinate axis?

x- axis data set measure or value/ y-axis frewuencey of the value.

How are the values quantified in a histogram?

Qualitative/ Variable data.

Standard deviation is a property of dispersion?

Statistical characterisitic or it's a dataset relative to its mean.

We cannot reject Ho when?

The significance level 'p' is less than alpha
The significance level p' is greater than or equal to alpha

The significance level p' is greater than or equal to alpha

When the sample size increases?

The standard error of the mean increases
The standard error of the mean does not change
The standard error of the mean decreases

The standard error of the mean decreases

Histograms are suitable for presenting?

Qualitative variables
Historical variables
Categorical variables
Quantitative variables

Quantitative variables

In Biostatistics

we check?

The alternative hypothesis
The null and alternative hypothesis
The Null hypothesis
The Working hypothesis

the "KURT" function in Excel calculates

coefficient of asymmetry
standard deviation
average value
the number of cases
coefficient of excess

coefficient of excess

the "COUNTIF" function in excel is

function for counting cases:
- under a certain condition
- outside a given range
- below a certain value

under a certain condition

the creation of fields and the definition of the data type in the Access program is done through a module

form
queries
table
report

table

one of the ways to search for information in the database is to enter a criterion in a module

form
queries
table
report

queries

the calculation of summary group statistics is possible through a module*

form
table
report

report

the "Queries" module in the Access program is used for *

collecting information
information processing
information storage
presentation of information

information processing

the "Form" module in the Access program is used for*

collecting information
information processing
information storage
presentation of information

collecting information

the "Table" module in the Access program is used for*

collecting information
information processing
information storage
presentation of information

information storage

the "Report" module in the Access program is used for*

collecting information
information processing
information storage
presentation of information

presentation of information

the null hypothesis in the Kolmogorov Smirnov method is

The median in one group does not differ from the median in the other group
The distribution in one group does not differ from the distribution in the other group
The mean in one group does not differ from the mean in the other group
The distribution of the variable does not differ from the normal distribution

The distribution in one group does not differ from the distribution in the other group