S7 tables & graphs, accuracy & precision

bar graph

graph that shows the relationship between one categorical variable and one continuous variable

XY scatter

graph that shows the relationship between two continuous variables

x-axis

the horizontal line where the independent variable belongs on a graph

y-axis

the vertical line where the dependent variable belongs on a graph

interpolation

estimating a value within the range of measured data by using the line of best fit on a graph

extrapolation

estimating a value beyond the range of measured data by using the line of best fit on a graph

line of best fit

a line drawn in a scatter plot to fit most of the data points and which shows the relationship between the IV and DV

units

written on the axes, along with labels, to indicate how the data was measured

labels

written on the axes, along with units, to indicate the IV (x-axis) or DV (y-axis) is

table and graph title format

The effect of (IV) on (DV)

pie chart

a chart that shows the relationship of a part to a whole

error bars

used of a graph to show the variability of a data set

range

Distance between highest and lowest scores in a set of data.

accuracy

how close a measurement is to the true value (evaluated using the average of a data set)

precision

a measure of how close a series of measurements are to one another

average (mean)

the sum of a set of numbers divided by the number of numbers in a set

overlapping error bars

data sets are not considered conclusively different because the data is too similar

short error bars

data set is precise bc small range of data

long error bar

data set is not precise bc large range of data

error bars without overlap

data sets are conclusively different bc most data is not the same