Suited for one kind of graph than another. The type of data you are presenting may be better Reversed, would this be better or worse? Why? Which Visual Representation?
Previous example, why were green and brown chosen? If the colors were Information, but should not be used simply for decoration. While brown lines or bars represent rainfall in the desertĬolors or patterns should be used to help convey Indicate that green lines or bars represent rainfall in the tropics The legend becomes important when you are graphing
However, there should be a reason why a particular curve is chosen. In some cases, the relationship may not be linear, but exponential or logarithmic, or some other mathematical function, so a curve might be more appropriate than a line. However, if you are graphing a scatterplot, you might do a trendline or regression line through the points, but would not connect each one. The implication is that the values do not drop back to zero between measurements. Should you connect the data points with a line? Typically the answer is yes if the data points are part of a series of measurements of the same thing over a period of time, for example. If there are multiple data sets being plotted on the same graph, each set should be represented by a unique symbol. Typically, each independent measurement represents a point on the graph. Units shouldīe reported following the axis label, as in "Total Rainfall Measuring rainfall, people won't know if you mean inches, Talking about seconds, minutes, hours, days, years, etc. Units as well as the numeric values so people will know if you are If you are measuring time, you must include the Label might read "Total Rainfall" and the x-axis label might read Indicating which variable is represented. When graphs are compared side-by-side, consider scaling them to the same data range to make comparisons easier. Typically the scale runs from low to high inĮasily counted multiples like 10s, 50s, 100s, etc. The scale is measured off in major and minor The highĮnd of the scale is usually a round number value slightly larger than Number value slightly smaller than the smallest data point. The low end of the scale may be zero or a round Graphs with only positive values for x and y, the origin is in theĮach axis needs a scale to show the range of theĭata on that axis.
Referred to as the origin, where the coordinates are (0,0).
(horizontal line) of the graph and the dependent variable belongs on The independent variable belongs on the x-axis Graph inches of rainfall in 20 against time of For example, you may overlap plots of rainfall in theĭesert and rainfall in the tropics against time of year, or you could Than one dependent variable, but never more than one independent Therefore, rainfall is the dependent variable and time of year On time of year, but time of year does not depend on rainfall. Of rainfall that occurs at different times of year. Imagine that we want to make a graph of the amount
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