Notes on Statistics and Probability

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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Statistics and Probability Reviewer

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 scaleThere 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.


McJulez is a passionate writer who loves making concise summaries, sharing valuable notes, and talking about new insights. With a background in campus journalism and a commitment to delivering experienced and reliable content, McJulez is dedicated to making this platform a community of learning and connection. facebook twitter pinterest

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