Mathematics: Probability

This reviewer only includes the definitions derived from Modules 4-6 that discuss probability. To comprehend further, read modules and watch materials effectively. Thank you!

Experiment

Activity with observable results.

Outcome

Result/s of an experiment.

Sample Space

All possible outcomes of an experiment.

Sample Point

One possible outcome of the experiment.

Event

Subset of a sample space.

Probability

Estimation of how likely an event is to happen.

Table/Tabular Method

Corresponding rows and columns represent possible outcomes.

Tree Diagram

Consists of line segments that connects all possible combinations of outcomes of the experiment.

Systematic Listing

Simply listing down the possible outcomes.

Fundamental Counting Principle (FCP)

Finding the number of outcomes by multiplying the outcomes for each event.

Table/Tabular Method

Tree Diagram

Systematic Listing

Fundamental Counting Principle (FCP)

Likely

Also referred to as 0.75 or 75%. This means that there is a big possibility for the event to happen.

Unlikely

Also referred to as 0.25 or 25%. This means that there is a small possibility for the event to happen.

Impossible

Also referred to as 0 or 0%. This means that there is no possibility for the event to happen.

Certain

Also referred to as 1 or 100%. This means that there is a 100% chance for the event to happen.

The probability of an event can be expressed using:

Fractions, Decimals, and Percent from 0 to 1 inclusively.

Experimental Probability of an Event:

No. of Times an Event Occurs / Total No. of Trials