BL IT 6210 Quantitative Methods PDF

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Quiz1, Short Quiz1 And Assignment1 Statistics help predicts the future course of action of the phenomena. a. Comparison b. To present facts in definite form c. Forecasting d. Formulation and Testing of Hypothesis

The statistics are presented in a indefinite form so they also help in condensing the data into important figures. True False

Statistics is only the science of uncertainty and not the technology of extracting information from data. True False

Which among the set is bimodal? a. b. c. d.

{55, 44, 33, 22, 11} {122, 221, 122, 223} {2, 2, 2, 3, 4,} {12, 22, 43, 22, 12}

When the number of elements of the population is fixed and thus making it possible to enumerate it in totality. a. b. c. d.

Hypothetical Finite Existent Infinite

It is a characteristic that varies from one individual member of population to another individual. a. b. c. d.

Data Variable Parameter Measurement

It is the study of how to collect, organize, analyze, and interpret numerical information from data. a. b. c. d.

Statistics Economics All of the Choices Probability

Example of this are number of episodes of respiratory arrests or the number of reintubations in an intensive care unit. a. Discrete Data b. Continuous Data c. Population d. Sample

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 False

Standard Deviation is a measure of how spread out is the distribution. True False

It is the average of all the elements of a set

a. Mean b. Mode c. Median d. Range

One disadvantage of the mean is that a small number of extreme values can distort its value. True False

These are the two main branches of statistics a. b. c. d.

Differential and Statistical Population and Sample Qualitative and Quantitative Descriptive and Inferential

The measures of central tendency are mean, median and mode. True False

It is used to make predictions or comparisons about a larger group (a population) using information gathered about a small part of that population.

a. b. c. d.

Scientific Method Differential Statistics Inferential Statistics Descriptive Statistics

It aims to describe various aspects of the data obtained in the study. a. Inferential Statistics

b. Descriptive Statistics c. Scientific Method d. Differential Statistics

Comparison is one of the main functions of economics as the absolute figures convey a very less meaning. True False

This industry use statistical approaches to estimate the number of depositors and their claims for a certain day a. b. c. d.

Mathematics Economics Medicine Banking

The randomly selected 100 students for a survey is called a population True False

The characteristic of population based on all units is called parameter while the measure of sample observation is called statistic.

True False

These are often used to communicate research findings and to support hypotheses and give credibility to research methodology and conclusions. a. Experimentation b. Analysis of data

c. Statistical Method and Analyses d. Scientific Methods

Which is considered as qualitative data? a. b. c. d.

The texture of a rock Temperature of a patient in degree Number of students Height of a building

Qualitative data are variables that cannot be ordered in a logical or natural way. True False

These are numerical measurements that arise from a natural numerical scale. a. Variable b. Quantitative Variable c. Binary d. Qualitative Variable

What is a number or attribute computed for each member of a population or a sample? a. b. c. d.

Variable Parameter Measurement Data

It is important to study statistics in order to formulate well-advance predictions. True False

When the number of units in a population are uncountable, and so it is impossible to observe all the items of the universe a. Existent b. Finite c. Infinite d. Hypothetical

The population is not confined to people only, but it may also include animals, events, objects, buildings, etc. True False

Descriptive Statistics is the branch of statistics that involves organizing, displaying and describing data. True False

Data collection used for a population. a. b. c. d. e.

Sample Survey Census None of the Choices Sampling

Which among the data is a sample? a. Makatizen b. Filipinos c. All Employees of XYZ Company d. One section out of all IT Students

It means a subgroup of the members of population chosen for participation in the study

a. b. c. d.

Census Population Parameter Sample

Assignment2, Short Quiz 2 and Quiz 2

It a characteristic or feature that varies, or changes within a study a. b. c. d.

Criterion Classification Attribute Variable

The more variables, the more complex the study and the more complex the statistical analysis. True False

The value of statistics is strong because they can serve as predictions as well as probabilities in certain trends. True False

Appropriate use of statistical methodology in data analysis means the data should be analyzed in a way that is both scientifically and statistically unreasonable. True False

Variable that always goes on the x-axis, or the horizontal axis

a. Erroneous Variable b. Independent Variable c. Dependent Variable d. Continuous Variable

Variables are central to any analysis and they do not need to be understood well by the researcher. True False

Scientific research rarely leads to absolute certainty. True False

Statistical variables do not contain numerical values but rather something __________________________. a. Experimental b. Categorical c. Descriptive d. Logical

It is often based on statements of statistical significance and probability. a. b. c. d.

Astronomy Modern science Physics Science

It varies according to changes in other variables. a. Erroneous Variable b. Dependent Variable c. Independent Variable

d. Continuous Variable

Scientific data rarely lead to absolute conclusions. True False

Which is another term for dependent variable? a. Explanatory Variable b. Controlled Variable c. Input Variable d. Predicted Variable

It is the science of uncertainty. a. Chemistry b. Probability and Statistics c. Geometry d. Physics

The significance of statistical figures can be seen best when validating solid arguments or predictions out of hypotheses or conjectures that may seem overwhelming to a layman. True False

It is the scientific study of earthquakes. a. b. c. d.

Geology Geostatistics Seismology Astronomy

We use statistics when the number of cases that can occur are really small.

True False

Statistics provide a measure of proof that something is true. True False

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?

a. Taste of popcorn b. Brand of popcorn bags c. Value of money d. Number of kernels popped

It involves the application of specific statistical techniques to disciplines in biology such as population genetics, epidemiology and public health.

a. b. c. d.

Geostatistics Biostatistics Statistical Science Statistics

Variables can be defined in terms of measurable factors through a process of _______________________________. a. b. c. d.

Operationalization/Variable Definition Explanation Experimentation

The independent variables are called as predicator variable because independent variables predict or forecast the values of the dependent variable in the model. True False

The significance of statistical figures can be seen best when invalidating solid arguments or predictions out of hypotheses or conjectures that may seem overwhelming to a layman. True False

It is a variable that goes on the y-axis, or vertical axis. a. Continuous Variable b. Dependent Variable c. Independent Variable d. Erroneous Variable

Independent and dependent variables always go on the same places in a graph. True False

It is commonly used for analyzing experiment results, testing their significance and displaying the results accordingly. a. b. c. d.

Laboratory Presentations Experiment Statistical Method

The value of statistics is strong because they cannot serve as predictions as well as probabilities in certain trends. True False

It is also a logical grouping of attributes. a. b. c. d.

Attribute Variable Criterion Classification

There are two key variables in every experiment: the dependent variable and the independent variable. True False

Assignment3, Lab Exercise1, Quiz3

Classify the level of measurement it belongs: Score in IQ Test a. b. c. d.

Ordinal Ratio Interval Proportion

How many levels of measurements were discussed? a. Three b. Four c. Six d. Five

Which is not an importance of levels of measurements? a. Helps you decide how to interpret the data from that variable. b. Helps in solving complex mathematical problems c. Each of the levels of measurement provides a different level of detail d. Helps you decide what statistical analysis is appropriate on the values that were assigned

It refers to the relationship among the values that are assigned to the attributes for a variable. a. Attributes b. Levels of Measurement c. Relationship d. Measurement

Nominal provides the least amount of detail, and ratio provide the most amount of detail. True

False There is a subtype in ordinal scale with only two categories like one of the nominal scale and is known as dichotomous ordinal scale. True False

Classify the level of measurement it belongs: Gender a. b. c. d.

Ratio Interval Nominal Ordinal

It depends on physically measuring things. a. b. c. d.

Purpose Analytical Method Observation Experimental Method

It has the highest level of measurements. a. b. c. d.

Proportion Interval Ordinal Ratio

By default, all variables fall in one of the four scales. True False

The nominal scale forms the basis for such analyses as the Chi-Square because those analyses require that some category is compared to at least one other category. True

False The only permissible aspect related to numbers in a nominal scale is “counting.” True False

Classify the level of measurement it belongs: Birth Order a. Interval b. Ordinal c. Ratio d. Proportion

The concept of measurement has been developed in conjunction with the concepts of numbers and units of measurement.

True False

Which is not a level of measurement? a. b. c. d.

Proportion Nominal Ordinal Interval

Ratio scale is the 2nd level of measurement that reports the ranking and ordering of the data without actually establishing the degree of variation between them. True False

It is always possible to transform data from a higher level to a lower level but never the other way around True False

Knowing the level of measurement helps you decide what statistical analysis is appropriate on the values that were assigned True False

It has have no order and thus only gives names or labels to various categories. a. b. c. d.

Ordinal Nominal Ratio Nterval

Which is classified as Ratio? a. b. c. d.

Birth order Yes or No 30 degrees Celsius Sibling

In this level of measurement, the numbers in the variable are used only to classify the data. a. Ordinal b. Nominal c. Interval d. Ratio

Sex or Gender is classified under what level of measurement? a. Interval b. Ordinal c. Ratio d. Nominal

Compute the frequency of all nominal variables using what formula? a. b. c. d.

=COUNTIF() =COUNT() =FREQ() =NOM.COUNT()

It does not only classify and order the measurements, but it also specifies that the distances between each interval on the scale are equivalent along the scale from low interval to high interval. a. b. c. d.

Nominal Ratio Ordinal Interval

Achievement is classified under what level of measurement? a. b. c. d.

Ratio Interval Nominal Ordinal

Which is not classified as Nominal? a. School b. Gender c. True or False d. Age

Age is under what level of measurements? a. Ordinal b. Ratio c. Interval d. Nominal

Interval scales are exactly like ratio scales, except that they have a true zero point True False

In this level of measurement, the observations, in addition to having equal intervals, can have a value of zero as well. a. Ordinal b. Nominal c. Interval d. Ratio

The central tendency of the ordinal scale is _______________________________. a. Mean b. Mode c. Range d. Median

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 False

Nominal scale is _______________________ in nature, which means numbers are used here only to categorize or identify objects. a. None

b. Qualitative c. Quantitative d. Both

Point _______________________ is an essential characteristic to measure a ratio between any two variables. a. Two b. Three c. One d. Zero

It is when numbers don’t define the characteristics related to the object. a. b. c. d.

Nominal Ratio Ordinal Interval

In ordinal measurement the numerical values just "name" the attribute uniquely. True False

It is used as a comparison parameter to understand whether the variables are greater or lesser than one another using sorting. a. Ordinal b. Interval c. Proportion d. Ratio

The interval scale gives the ability to quantify and differentiate between options. True

False

Which of the following definition defines interval scale? a. Have no order and thus only gives names or labels to various categories. b. Have meaningful intervals between measurements, but there is no true starting point (zero). c. Have no order and thus only gives names or labels to various categories d. Have the highest level of measurement

In ratio scale, variables can be systematically added, subtracted, multiplied and divided. True False

It gives the ability to quantify and differentiate between options. a. b. c. d.

Proportion Ordinal Ratio Interval

Nominal comes from the Latin root ‘name’ meaning nomen. True False

Long Quiz1

It has an absolute zero. a. b. c. d.

Interval Ratio Ordinal Nominal

Nominal is hardly measurement. It refers to quantity more than quality. True False

An interval scale indicates direction, in addition to providing nominal information. True False

Numbers can be also used to order. True False

It is the outcome variable measured in each subject, which may be influenced by manipulation of what variable? a. b. c. d.

Independent Dependent Discrete Continuous

The independent variables are called as predicated variable because independent variables predict or forecast the values of the dependent variable in the model. True False

Say youre interested in how rising sea temperatures impact algae life, so you design an experiment that measures the number of algae in a sample of water taken from a specific ocean site under varying temperatures. What is the independent variable? a. The color of the water b. The number of algae in the sample c. The temperature of the ocean

d. The depth of the ocean

The time invested often requires determination of the appropriate methodology to apply in analysis corresponding to the hypothesis and design of the investigation. True False

These are measurements for which there is no natural numerical scale, but which consist of attributes, labels, or other non numerical characteristics. a. Qualitative Data b. Quantitative Data c. Discrete Data d. Continuous Data

It is the branch of statistics that involves drawing conclusions about a population based on the information contained in a sample taken from that population. a. b. c. d.

Biostatistics Statistical Science Descriptive Statistics Inferential Statistics

Which is an example of interval scale? a. b. c. d.

GPA Income Ruler Time of the day on a 12-hour clock

All measurements contain some uncertainty and error, and statistical methods help us quantify and characterize this uncertainty. True False

It is a characteristic that varies from one individual member of population to another individual. a. b. c. d.

Traits Attributes Variable Data Type

It is a nominal level variable that can take only two values (yes/no, male/female, Hungarian/non-Hungarian). a. b. c. d.

Ordinal Binominal Proportional Dichotomy

Using a ratio scale permits comparisons such as being twice as high, or one-half as much. True False

It is a branch of science that deals with the collection, organization, analysis of data and drawing of inferences from the samples to the whole population. a. General Relativity b. Quantum Physics c. Statistics d. Probability

It is the variable whose change isn’t affected by any other variable in the experiment. a. b. c. d.

Independent Variable Erroneous Variable Dependent Varaible Constant Variable

Which is not a level of measurement in Statistics? a. Proportion

b. Ordinal c. Nominal d. Interval

If a researcher aims to find the average height of a tribe in Columbia, the variable would simply be __________________ in the sample. a. b. c. d.

The height of the person The tribes in Columbia The weight of the person The total number of population in Columbia

It tries to describe the relationship between variables in a sample or population and provides a summary of data in the form of mean, median and mode. a. b. c. d.

Inferential Statistics Statistical Science Biostatistics Descriptive Statistics

Measurement at the interval or ratio level is desirable because we can use the more powerful statistical procedures available for ____________ and _______________________. a. b. c. d.

Median and Variance Mean and Variance Mean and Standard Deviation Median and Standard Deviation

A set is said to be multimodal if it has _________________________. a. Two modes b. No mode c. Four and more modes d. Three or more modes

PRELIM

Compute the average of all variables using what formula? a. =AVE() b. =AVERAGE() c. AVERAGE d. AVE()

Examples of ________ level data include temperature and year. a. Ratio b. Ordinal c.

Interval

d. Nominal

The independent variables are called as predicated variable because independent variables predict or forecast the values of the dependent variable in the model.

True False

What is the mode of score unde...