A scatterplot is a graph that is used to plot the data points for two variables. Each scatterplot has a horizontal axis (x-axis) and a vertical axis (y-axis). One variable is plotted on each axis.
Dictionary entry overview: What does fractional mean? â¢ FRACTIONAL (adjective) The adjective FRACTIONAL has 1 sense: 1. constituting or comprising a part or fraction of a possible whole or entirety Familiarity information: FRACTIONAL used as an adjective is very rare. Dictionary entry details
Stellar composition, as determined by spectroscopy, is usually simply defined by the parameters X, Y and Z. Here X is the fractional percentage of hydrogen, Y is the fractional percentage of helium, and all the remaining chemical elements as the fractional percentage, Z. It is simply defined as; In most stars, nebulae and other astronomical sources, hydrogen and helium are the two dominant elements. The hydrogen mass fraction is generally expressed as where is the total mass of the system and the fractional mass of the hydrogen it contains.