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What is the axis of a bar graph?
Bar graphs are typically placed on the standard X-Y coordinate system. There are two axes: x and y.
What goes on the x axis of a bar graph?
Usually the x-axis of a bar graph shows a control range, and is plotted on the bottom of the graph. Time is a common x-axis example.
What variables are shown in a bar graph?
X and Y.
What does sum of the product of the deviations mean?
Suppose you conduct an experiment that yields a collection of pairs, (x1, y1), (x2, y2), (x3, y3), ... (xn, yn). In other words, yi is the value of variable y when variable x assumes the value xi. Let us call the average of the xi values x-bar and the average of the yi values y-bar. Then an x-deviation is xi - x-bar and a y-deviation is yi - y-bar. One product of a pair of these deviations is ( xi - x-bar )( yi - y-bar ). If you now sum these deviations with the i going from 1 to n you will have the 'sum of the product of the deviations'.
What is the bottom line of a bar graph called?
X-Axis
