First 279 words of the document:
1.) A probability distribution is a list of all possible outcomes together with
Discrete uniform distribution
2.) A discrete uniform distribution has n distinct outcomes. Each outcome is
equally likely. The probability of any given outcome = 1/n.
3.) A binominal distribution has a fixed number of independent trials n. Each
trial has only two outcomes (success and failure). The probability of success id p.
The probability of failure is q.
4.) The probabilities for the events of n binominal trials will be terms of the
expansion (p + q)^n.
5.) Two properties of normal distribution are
The distribution is symmetrical about the mean
The mode, median and mean are all equal (because the distribution is
6.) Further properties of a normal distribution are
95% of the observations lie within +/ two standard deviations of the
Virtually all (99.8%) lie within +/ three standard deviations of the mean
7.) The variance of a normal distribution is a measure of how spread out the
Variance = standard deviation x standard deviation
8.) A control chart is a time series chart that is used for process control.
9.) If a sample mean is between the warning limits the process is in control and
the product is acceptable.
10.) If a sample mean is between the warning and action limits another sample is
taken immediately to see if there might be a problem.
11.) If a sample mean is outside the action limits the process is stopped and the
machinery is reset.