S1 Flashcards
What are some disadvantages of mathematical models…
They only give a partial description of the real situation
They only work for a restricted range of values
Give some advantages of mathematical models…
Quick and easy to produce
They can simplify a complex situation
They can help us improve our understanding of the real world as certain variables can readily be changed
Predictions can be made about the future
They can provide control
What is a continuous variable?
A variable that can take any value in a give range.
What is a discrete variable?
A variable that can take only specific values in a given range.
What describes a distribution with a symmetrical skew?
Mode=median=mean
What describes a distribution with positive skew?
Mode<mean
What describes a distribution with negative skew?
Mode>median>mean
