IT-T(UGRD) Quantitative Methods Study Guide 2023 with
complete solution
Data collection used for a population.
census
The characteristic of population based on all units is called parameter while the
measure of sample observation is called statistic.
True
Statistics is only the science of uncertainty and not the technology of extracting
information from data.
False
The mean is sensitive to any change in value, unlike the median and mode, where
a change to an extreme or uncommon value usually has no effect.
True
What is a number or attribute computed for each member of a population or a
sample?
Measurement
Statistics help predicts the future course of action of the phenomena.
Forecasting
Which is considered as qualitative data?
a. The texture of a rock
Descriptive Statistics is the branch of statistics that involves organizing,
displaying and describing data.
True
Which among the set is bimodal?
{55, 44, 33, 22, 11}
Example of this are number of episodes of respiratory arrests or the number of
re-intubations in an intensive care unit.
c. Discrete Data
Standard Deviation is a measure of how spread out is the distribution.
False
It aims to describe various aspects of the data obtained in the study.
c. Descriptive Statistics
It is used to make predictions or comparisons about a larger group (a population)
using information gathered about a small part of that population.
d. Inferential Statistics
The statistics are presented in a indefinite form so they also help in condensing
the data into important figures.
False
The randomly selected 100 students for a survey is called a population
False
Which among the data is a sample?
c. One section out of all IT Students
It means a subgroup of the members of population chosen for participation in the
study
,Sample
One disadvantage of the mean is that a small number of extreme values can
distort its value.
true
The population is not confined to people only, but it may also include animals,
events, objects, buildings, etc.
True
Which is an example of interval scale?
a. Time of the day on a 12-hour clock
Which of the following definition defines interval scale?
a. Have meaningful intervals between measurements, but there is no true starting point
(zero).
Variables can be defined in terms of measurable factors through a process of
_______________________________.
Operationalization
It is a variable that goes on the y-axis, or vertical axis.
d. Dependent Variable
It is the variable whose change isn't affected by any other variable in the
experiment.
a. Independent Variable
It is commonly used for analyzing experiment results, testing their significance
and displaying the results accordingly.
d. Statistical Method
This industry use statistical approaches to estimate the number of depositors
and their claims for a certain day
Banking
Which is not an importance of levels of measurements?
Helps in solving complex mathematical problems
Which is not classified as Nominal?
Age
The value of statistics is strong because they can serve as predictions as well as
probabilities in certain trends.
true
In this level of measurement, the observations, in addition to having equal
intervals, can have a value of zero as well.
a. Ratio
Point _______________________ is an essential characteristic to measure a ratio
between any two variables.
Zero
Measurement at the interval or ratio level is desirable because we can use the
more powerful statistical procedures available for ____________ and
_______________________.
d. Mean and Standard Deviation
Scientific data rarely lead to absolute conclusions.
True
, Say you want to figure out which brand of microwave popcorn pops the most
kernels so you can get the most value for your money. You test different brands
of popcorn to see which bag pops the most popcorn kernels. Which among the
choices is the independent variable?
b. Brand of popcorn bags
Nominal scale is _______________________ in nature, which means numbers are
used here only to categorize or identify objects.
Qualitative
The central tendency of the ordinal scale is _______________________________.
Median
Compute the frequency of all nominal variables using what formula?
c. =COUNTIF()
It is a nominal level variable that can take only two values (yes/no, male/female,
Hungarian/non-Hungarian).
d. Dichotomy
It is often based on statements of statistical significance and probability.
d. Modern science
Sex or Gender is classified under what level of measurement?
Nominal
It is the outcome variable measured in each subject, which may be influenced by
manipulation of what variable?
Independent
Using a ratio scale permits comparisons such as being twice as high, or one-half
as much.
True
By default, all variables fall in one of the four scales.
True
Age is under what level of measurements?
Interval
Although in an interval scale, since there is an absence of the absolute 0 and it
works on the principal of an arbitrary 0, the division of variables is not possible.
True
Classify the level of measurement it belongs: Score in IQ Test
b. Interval
It is used as a comparison parameter to understand whether the variables are
greater or lesser than one another using sorting.
Ordinal
It refers to the relationship among the values that are assigned to the attributes
for a variable.
a. Levels of Measurement
The measures of central tendency are mean, median and mode.
True
Which is classified as Ratio?
Sibling
It is the scientific study of earthquakes.
d. Seismology
complete solution
Data collection used for a population.
census
The characteristic of population based on all units is called parameter while the
measure of sample observation is called statistic.
True
Statistics is only the science of uncertainty and not the technology of extracting
information from data.
False
The mean is sensitive to any change in value, unlike the median and mode, where
a change to an extreme or uncommon value usually has no effect.
True
What is a number or attribute computed for each member of a population or a
sample?
Measurement
Statistics help predicts the future course of action of the phenomena.
Forecasting
Which is considered as qualitative data?
a. The texture of a rock
Descriptive Statistics is the branch of statistics that involves organizing,
displaying and describing data.
True
Which among the set is bimodal?
{55, 44, 33, 22, 11}
Example of this are number of episodes of respiratory arrests or the number of
re-intubations in an intensive care unit.
c. Discrete Data
Standard Deviation is a measure of how spread out is the distribution.
False
It aims to describe various aspects of the data obtained in the study.
c. Descriptive Statistics
It is used to make predictions or comparisons about a larger group (a population)
using information gathered about a small part of that population.
d. Inferential Statistics
The statistics are presented in a indefinite form so they also help in condensing
the data into important figures.
False
The randomly selected 100 students for a survey is called a population
False
Which among the data is a sample?
c. One section out of all IT Students
It means a subgroup of the members of population chosen for participation in the
study
,Sample
One disadvantage of the mean is that a small number of extreme values can
distort its value.
true
The population is not confined to people only, but it may also include animals,
events, objects, buildings, etc.
True
Which is an example of interval scale?
a. Time of the day on a 12-hour clock
Which of the following definition defines interval scale?
a. Have meaningful intervals between measurements, but there is no true starting point
(zero).
Variables can be defined in terms of measurable factors through a process of
_______________________________.
Operationalization
It is a variable that goes on the y-axis, or vertical axis.
d. Dependent Variable
It is the variable whose change isn't affected by any other variable in the
experiment.
a. Independent Variable
It is commonly used for analyzing experiment results, testing their significance
and displaying the results accordingly.
d. Statistical Method
This industry use statistical approaches to estimate the number of depositors
and their claims for a certain day
Banking
Which is not an importance of levels of measurements?
Helps in solving complex mathematical problems
Which is not classified as Nominal?
Age
The value of statistics is strong because they can serve as predictions as well as
probabilities in certain trends.
true
In this level of measurement, the observations, in addition to having equal
intervals, can have a value of zero as well.
a. Ratio
Point _______________________ is an essential characteristic to measure a ratio
between any two variables.
Zero
Measurement at the interval or ratio level is desirable because we can use the
more powerful statistical procedures available for ____________ and
_______________________.
d. Mean and Standard Deviation
Scientific data rarely lead to absolute conclusions.
True
, Say you want to figure out which brand of microwave popcorn pops the most
kernels so you can get the most value for your money. You test different brands
of popcorn to see which bag pops the most popcorn kernels. Which among the
choices is the independent variable?
b. Brand of popcorn bags
Nominal scale is _______________________ in nature, which means numbers are
used here only to categorize or identify objects.
Qualitative
The central tendency of the ordinal scale is _______________________________.
Median
Compute the frequency of all nominal variables using what formula?
c. =COUNTIF()
It is a nominal level variable that can take only two values (yes/no, male/female,
Hungarian/non-Hungarian).
d. Dichotomy
It is often based on statements of statistical significance and probability.
d. Modern science
Sex or Gender is classified under what level of measurement?
Nominal
It is the outcome variable measured in each subject, which may be influenced by
manipulation of what variable?
Independent
Using a ratio scale permits comparisons such as being twice as high, or one-half
as much.
True
By default, all variables fall in one of the four scales.
True
Age is under what level of measurements?
Interval
Although in an interval scale, since there is an absence of the absolute 0 and it
works on the principal of an arbitrary 0, the division of variables is not possible.
True
Classify the level of measurement it belongs: Score in IQ Test
b. Interval
It is used as a comparison parameter to understand whether the variables are
greater or lesser than one another using sorting.
Ordinal
It refers to the relationship among the values that are assigned to the attributes
for a variable.
a. Levels of Measurement
The measures of central tendency are mean, median and mode.
True
Which is classified as Ratio?
Sibling
It is the scientific study of earthquakes.
d. Seismology
