Life Exectancy
Statistical measure of average time an organism will live.
Median Age
The age that divides a population into two groups.
Children per Women
The number of children per women.
Nuclear electricity production
Energy released by a nuclear reaction that is being produced,
Income per Person
Average income made earned per person.
Graph
A diagram that shows a relationship or compares values. There are different type of graphs (line graph, bar graph, scatter plot)
Positive Correlation
The relationship between two variables where both the variables increase or decrease.
Negative Correlation
The relationship between two variables when one variable increases and the other variable decreases.
L.O.B.F
A line of best fit describes the relationship between two variables in a scatter plot.
Linear Relations
A relation in which the graph forms basically a straight line. If first differences are constant the relationship is Linear.
Non Linear Relationship
A relation in which the graph does not form a straight line. If first differences are different/not constant the relationship is non-linear.
Slope
A measure, often represented by m, of the steepness of a line; the ratio comparing the vertical and horizontal distances (called the rise and run) between two points; m=rise/run.
Y-axis
A line that runs vertically on a graph.
X-axis
A line that runs horizontally on a graph.
Y-intercept
The value at which a graph meets the y-axis; the value of x is 0 for all y-intercepts.
X-intercept
The value at which a graph meets the x-axis; the value of y is 0 for all x-intercepts.
Partial Variation
A relation in which one variable is a multiple of the other plus a constant amount.
Direct Variation
A relation in which one variable is a multiple of the other.
Rate of Change
Change in one quantity, compared to the change in another quantity.