Notesale: Turn your study into money

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Aaronn Daphne M
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What is statistics?
Statistics is the study of the collection, organization, presentation, analysis, and
interpretation of numerical data to obtain useful and meaningful information
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Enumerate and compare the two branches of statistics
Statistics have two branches, descriptive statistics, and inferential statistics
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It summarizes the data by describing it while
Inferential statistics deals with the techniques used in generalizing from samples to
populations, performing estimations and hypothesis tests determining relationships
among variables, and making predictions
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It is mainly applied at embracing the understanding of a huge
mass of data by providing only few observations
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Comparison
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It helps us to understand the
data in a better way
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Forecasting
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That is the
meaning of forecasting
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Estimation
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A statistical hypothesis is some statement about the
probability distribution, characterizing a population based on the information
available from the sample observations
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Statistics helps in presenting complex data in a suitable tabular, diagrammatic
and graphic form for easy and clear comprehension of the data
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Statistics helps in providing a better understanding and exact description of a
phenomenon of nature
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Statistics helps in the proper and efficient planning of a statistical inquiry in any
field of study
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Statistics mostly used by the researcher
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Otherwise, it results in a loss of money, time and data
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Statistics data allow us to collect the information around the world
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The fundamental behind the
internet is based on statistics and mathematics concepts
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Differentiate population from a sample
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Population is all the elements in a group being studied or the entire group
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The total
population size is always greater than the size of the sample
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Define sampling
Sampling is the process of getting samples from the population
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Give examples or
illustrations
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These are the following:
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Statistics data allow us to
collect the information around the world
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The
fundamental behind the internet is based on statistics
and mathematics concepts
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Systematic Sampling
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Stratified Sampling
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The actual sample is the sum of the
samples derived from each strategies
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Cluster Sampling
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Every member of
the selected cluster will be considered as
sample
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These are:
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Sample is chosen by the
researcher by the obtaining members of the
population in a convenient, often haphazard way
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Quota Sampling
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The researcher is aware of categories
within the population and draws samples from
each category
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The researcher employs his or
her judgments on choosing which he or she believes
are representative of the population
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Snowball Sampling
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A primary set of samples are
chosen based on the criteria set by the researcher
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There are three methods of data collection
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Survey method
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Second, decide which type of survey you will use it can be
through mail, online, telephone, or in-person
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Lastly, distribute the survey
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Observation
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Second is to establish recording method,
decide which recording device you will use
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Next is to observe and take notes
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The steps used to collect data through experiment are: (1) Make
observations
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(3) Make a prediction
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(5) Analyze the results of the experiment
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There are four levels of measurement
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Nominal Level
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It classifies data into categories that can be ranked; however,
precise differences between the ranks do not exist
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Interval Level
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It possesses all the characteristics of interval measurement, and
there exists a true zero
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What are the different methods of presenting data? Discuss and illustrate
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Textual Form
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The text highlights the
important figures or results that the researcher wishes to focus on
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Sixteen students got a score of 40 and above,
while only 3 got 19 and below
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Data appears in a systematic manner in rows and columns
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Graphical Form
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In
that manner, the reader can easily
perceive what is being meant by the
figure or any trend being portrayed by
the data
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Compare the ff measures of central
tendency:
a
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b
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c
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Eating

Studying

Others



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