Probability and Statistics

Correlation is a statistical measure that describes the extent to which two variables change together. It can be positive, negative, or indicate no association.

'No association' means that there is no predictable relationship between two variables; changes in one variable do not affect the other.

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 (impossible) and 1 (certain).

To find the probability of two independent events occurring together, multiply the probability of the first event by the probability of the second event.

The probability of landing on any one section is 1/4, since there are 4 equal sections.

A trend line is a line that is drawn on a graph to show the general direction that a group of points seems to be heading.

Higher temperatures may lead to more guests at a theme park, as people are more likely to visit when the weather is warm.

A positive association means that as one variable increases, the other variable also tends to increase.

A negative association means that as one variable increases, the other variable tends to decrease.

A sample is a subset of a population used to represent the entire group in statistical analysis.