17 notecards = 5 pages (4 cards per page)
Q1. What is a probability experiment?
A probability experiment is chance process that leads to well defined outcomes.
Q2. Define sample space
A set of all possible outcomes from a probability experiment.
Q3. What is the difference between an outcome and an event?
An outcome is a result of a single trial from a probability experiment while an event is can consist of more than one outcome.
Q4. What are equally likely events?
Equally likely events have the same probability of occurring.
Q5. What is the range of the values of the probability of an event?
Range of the values 0 to 1 inclusive
Q6. When an event is certain to occur, what is its
The probability when an event is certain is: 1
Q7. If an event cannot happen, what value is assigned to its probability?
When an event can not happen, the value is assigned is: 0
Q8. What is the sum of the probabilities of all the outcomes in a sample space?
The sum of all the outcomes in a sample space is: 1
Q9. If the probability that it will rain tomorrow is 0.20, what is the probability that it won’t rain tomorrow? Would you recommend taking an umbrella?
The probability that it won't rain tomorrow is 0.80. The probability that it won't rain is 0.80 more than the probability that it will rain - 0.2, so an umbrella won't be needed. Although it would be nice to have one in your car just in case - just saying.
Q10. Define mutually exclusive events.
If they cannot occur at the same time. (I.E. They have no outcomes in common).
Measures of average are also called
The measures that determine the spread
measures of variation, or measures of dispersion. These
Finally, another set of measures is necessary to describe data. These measures are
They tell where a specific data value falls within the data set
A statistic is
a characteristic or measure obtained by using the data values from a sample.
A parameter is
a characteristic or measure obtained by using all the data values from a
The mean is
the sum of the values, divided by the total number of values. The symbol
The median is
the midpoint of the data array. The symbol for the median is MD.