A model that’s used as a theoretical approximation of reality to help describe the phenomenon of interest
abstract model
Model that describes a phenomenon
whose outcome is fixed.
deterministic model
What kind of model is this?
Time = Speed/Distance
deterministic model
That’s because kahit anong input mo ng speed and distance, time pa rin makukuha mo (in a sense, ayun ung “fixed” outcome, not necessarily the same value)
re: mathematica functions are deterministic models (it’s not the same sa programming tho, since functions there behave differently)
What are two types of abstract models
- Deterministic
- Stochastic/random
Model that describes the unpredictable variation of the outcomes on a random experiment
random/stochastic model
Example: tossing a coin, hindi mo naman alam kung ano ung lalabas pero possible na mapredict kung ano ung mangyayari in the long run (in a sense na we can describe its probability)
T or F
We need to study probability theory in order to understand the method used in statistical inference, where sample data is used to make generalizations about the population.
True
T or F
Assuming that a particular deterministic model
provides a good explanation for the
phenomenon of interest, probability theory is
used for practical purposes by using the
information provided by the model in making
decisions on other related characteristics
False
Gagamit tayo ng probability theory when our model is stochastic since we don’t know ano yung magiging outcome niya mismo
Experiment that can be repeated under similar conditions whose outcome cannot be predicted in advance, even if its performed many times
random experiment
A jar contains 4 red, 6 blue, 2 green marbles. If one marble is drawn at random, what is the probability that it is blue?
1/2
6 blue marbles, 12 marbles
(wanted outcome)/(total outcome)
