Having the subject Statistics and Probability is actually fun. My passion for numbers may have something to do with it, but anyone can also love it. I am sharing a few notes on this subject in this article. Each term was explained briefly and directly. Here it is.
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What is Statistics?
Statistics involves the study of data collection, organization, analysis, presentation and interpretation.
Collection of Data may include:
- Direct Method or Interview
- Indirect Method or Questionnaire
- Observation
- Experimentation
Organization of Data may include:
- Systematic
Data may be presented through:
- Textual
- Tabular
- Graphical
Interpretation of Data may include:
- Assumptions
- Conclusions
- Recommendations
What are the two areas of Statistics?
- Descriptive
This area of statistics includes collection, organization, and presentation of data.
- Inferential
This area of statistics includes statistical tools.
What is a population?
It is simply the whole group.
What is a sample?
It is just a portion or representatives from a population.
What is a sampling?
It is a technique or process for selecting a sample.
What are variables?
It is defined as any attributes, characteristics, numbers, or quantities that can be counted or measured.
2 Types of Variables
- Qualitative Variable
It simply connotes quality or names. It is descriptive in nature.
- Quantitative
It pertains to quantity or numbers-something you can count, measure or quantify.
It includes:
- Discrete
A variable that is obtained by counting.
- Continuous
A variable that is obtained through measurements.
Four different Levels of Measurement:
- Nominal
It can be used for identification purposes.
- Ordinal
It pertains to data that must have an order or data that can be ranked.
- Interval
The distances between each interval on the scale are detailed. Zero has no absolute value.
- Ratio
There is an equivalent distance between the points on the scale. There is a meaning for zero.
What is a Sample Space?
It is defined as the set of all credible results.
What is a Sample Point?
It is defined as a component of the sample space.
What is an Event?
It is defined as a cluster of one or more results appraised as a category.
What is an Experiment?
It is defined as making a sample with the intention of making a decision.
To download it in pdf, you may access the copy here: Senior High School Notes.
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