Sampling
When each individual in the population has an equal chance of being selected.
What is Random Sampling?
Probabilities vary between these two numbers.
What are 0 and 1?
Any event where the observed outcome in that event is always the same.
What is a fixed event?
An example of this would be taking a colored marble out of a bag, writing down what color it was, and placing it back into the bag before selecting another.
What is random selection with replacement?
What are the four ways we write probabilities?
Fraction, decimal, percent, or proportion.
Any event where the observed outcomes in that event can vary. Hint: Probability permits us to make predictions about these.
What are random events?
An example of this would be selecting a marble from a bag, recording the color, and not returning it to the bag before drawing another marble.
What is random selection without replacement?
The probability (p) of flipping a coin for a head.
What is 1/2 or 50%?
Tossing a coin would be an example of this type of event.
What is a random event?
The total number of possible outcomes that can occur in a given random event. (Also referred to as the outcome space.)
What is sample space?
The frequency of times an outcome occurs divided by the total number of possible outcomes.
What is probability?
The roll of a dice would be an example of this event.
What is a random event?
This requires that each individual has an equal chance of being selected and that the probability of being selected stays constant from one selection to the next if more than one individual is selected.
What is independent random sampling?
The definition we are using identifies p as a fraction or a proportion. If you work directly from this definition, when obtained, these are expressed as fractions.
What are probability values?
This is planned and not likekly to change.
What is a fixed event?