Explanation Of Graph Types - Sharp EL-9650 Operation Manual

CHAPTER 7

(7) Explanation of graph types

• As mentioned earlier, the calculator is capable of drawing 8 types of graphs using
statistical data.
• Graphs are selected by pressing
• Overviews of each graph are given below.
Histogram (A HIST):
• A bar graph is drawn using the entered statistical data (x).
• The X-axis shows the difference between MAX and
MIN values of the statistical data divided evenly by 10.
• The Y-axis shows the frequency.
(A): shows the smallest value (Xmin) of the statistical
data.
(B): shows the largest value (Xmax) of the statistical data.
(C): The number of divisions is shown as the equation
* The above screen will appear when pressing
WINDOW VALUE to automatic.
* The number of divisions for the above equation can be set using a number in the range of 1
through 64. Change the windows setting in order to change the number of division. (See
CHAPTER 4, "11. Setting a Window" on page 104.)
Broken line plot (B B.L.):
• Displays the frequency distribution of entered statisti-
cal data (x) using a broken line.
• The correlation of points between a histogram and a
broken line plot is as shown on the right (The broken
line is displayed by connecting the upper left points of
the bars of the histogram. In other words, the class
width of a histogram is represented by the upper left point of the bar graph.)
* It is possible to draw both a histogram and a broken line plot on a screen at the same time. In
this case, the histogram is not displayed with dots as shown in the diagram above. This
diagram uses a dotted line as a convenience to show the relationship between a histogram
and a broken line plot.
• Three types of points may be selected: "•", "+" or " " .
Normal probability plot (C N.P.):
• Statistical data (x) on the horizontal axis displays the
variable of the normal distribution that is standard for
that data. .
• If the dots are plotted in a near-straight line, it indicates
that the data is normal.
• The division number is shown using a equation identical to that of a histogram.
Ï
again in the STAT PLOT mode.
STATPLOT
[A ZOOM][9 Stat] and setting the
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(A) (C) (B)
.