Analyzing data- line graphs
Terms in this set (17)
The experimental factor that is manipulated; the variable whose effect is being studied. Goes on the X axis
The variable that may change in response to manipulations of the independent variable.Goes on the y axis
a graphical depiction of the relationship between two variables. Dots represent sample data.
line of best fit
a smooth line that reflects the general pattern in a graph
A type of relationship that exists between two variables whose graphed data points lie on a straight line
a curved line shown a rapid level of change
A term used to describe the relationship between two variables whose product is constant.
Describes linear relationships,as one amount increases/decreases,
another amount increases/decreases at the same rate.
rise/run. Used to determine the rate of change The steeper the line the higher the gradient(m)
a line that goes up from left to right
A line that slopes down when working from left to right. The rise is negative and the run is positive.
gradient of curved lines
Use the tangent of a line. A tangent is a straight line which touches the curve at one point only. You then find the gradient of this tangent.
strong correlation( linear)
Data that is very close to being a line is a scatter plot graph. There is a linear relationship between variables.
no correlation( linear)
Scatter plot data that shown no obvious pattern between variables
weak correlation( linear)
Scatter plot between strong and no correlation.
correlation coefficient( linear)
A value (r) denoting the strength of a linear relationship on a scatter plot.
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