Introduction to FX Stat 3

Introduction to FX Stat 3
Getting Started
When you open FX Stat you will see three separate areas
FX Stat Thinks in Columns
You enter data into columns.
You graph columns. Formulas
and data generators operate on
a whole column at once. Think
There are different types of
columns. In the screen shot you
can see a group column, a
frequency column, a normal
data column and a label
Your First Graph
Enter some data (any data) into
Column A
Right click on the column and
choose Quick Graph
Changing the Graph Type
Change the graph type to suit your needs. For the moment,
choose a Univariate graph type.
Right Click on Graph
Many features are accessed by right-clicking on the graph
• Axes, Scales, Grid and
Titles & Legend give
you more control over
the graph
• The screen shows the
options for Line
Graphs. Other graph
types have their own
• The DataSet options
control the way each
dataset is shown.
Data Set Options
• Data set options let you choose
how a data set is displayed.
You can change colours, line
thickness, point type and size.
You can also choose the colour
that FX Stat uses to highlight
selected data.
• The graph type button
(marked) is used to combine
graph types on one graph.
This is discussed later.
Summary Statistics
Now that we have our first graph, we can look at the
summary statistics for the data. Only a small selection of
the available statistics are shown below. Scroll down for
Getting Data
You can enter your own data (Yuck!)
You can copy data from other sources (like Excel) and paste them
into FX Stat.
You can generate data to fit your needs using FX Stat’s Data
Generators. This is so efficient that you can easily generate a
different data set for each student if you wish.
The four buttons take you to different pages of the data generator.
Data Generators
Select your desired
generator from the left.
FX Stat will give you a
description of the
Fill in the parameters
you need
Push OK. The data
generator will put the
data into your desired
Reuse Formulas
If you have used a data generator (or entered a formula
into a column) pushing the Reuse Formula button will
reuse the formula (including the parameters you have
set) in the currently selected column. This allows you to
quickly generate multiple sets of data.
Number of Data Sets
FX Stat can graph 24 data
sets on one set of axes.
Six sets are easily
accessible, the other 18
require you to push the
More button.
Some graph types (pie,
divided bar, stem and leaf
and back to back
histograms) can only graph
a limited number of data
Graphing Bivariate Data
Bivariate data needs data
from two columns
When you choose a
bivariate graph type, you
will notice that the data set
buttons now have two
locations to fill.
To graph bivariate data, use
Quick Graph twice.
Trivariate data requires
three columns (how
Graphing Frequency
Change a column
next to a data
column to f by right
clicking on it and
choosing Set to
Quick Graph the
The graph and
summary statistics
will now be for the
Entering Grouped Data
Grouped data is similar to
frequency tables – you have a
group column and an attached
frequency column.
Enter groups using the 10-20
notation which FX Stat
automatically interprets as
10 <= x < 20
FX Stat will normally automatically
identify group columns as you enter
Quick Graph the FREQUENCY
The Problem with Data
Statistics graphs are difficult and often a matter of opinion. Problems
usually show up when people start adding cumulative frequency
curves or frequency polygons to their graphs.
Just about everything that you consider to be the “right way” of
graphing statistics (particularly grouped data) is “obviously incorrect
(you idiot)” somewhere in the world. This is a nightmare for us!
The problem is not totally solvable because what you expect FX
Stat to produce for a set of data is subtly different, depending on the
context of the question. The difference is so subtle that we don’t
always manage to convince people it exists.
The problem exhibits when you use graphs which group data.
Entering your Own
If you enter your own
groups and frequencies,
FX Stat will almost
certainly produce what
you are after, even if it
makes no sense.
Graphing Continuous
If you ask FX Stat to draw a histogram of some
continuous data, FX Stat will automatically group it and
draw a graph. This will usually be what you want but you
may need to manually change the group width by rightclicking on the graph.
If you can’t get
FX Stat to
produce the
exact groups you
want, enter your
Graphing Discrete(ish)
Data – Here Be Demons!
Here we have added a cf curve to the graphs. Which
graph is correct?
Well…… it depends on the context. BOTH are correct
depending on the circumstances.
FX Stat will produce Graph 1. Graph 2 can be produced
by grouping the data.
The Solution
If you cannot get FX Stat to produce
what you want, explicitly enter your
own groups or use FX Stat to group
existing data into groups you have
Mixing Graph Types 1
Graph the same data TWICE.
Set the graph type to one of the two graphs types you want.
Edit the second data set (by pushing the data set button
Mixing Graph Types 2
Change the graph type for the second data set. You will have a
reduced selection as not all graph types can be mixed.
Mixing Graph Types 3
Fill Down
Often you can minimize your data entry by using fill down.
Typing Formulas
Click in a cell and type =
FX Stat can do all sorts of calculations on
columns. Column B = 2A. Column C is the rank
of the numbers in column B
More details of the available commands can be
found in the Help file.
Email Tutorials
Efofex provides comprehensive training for FX Stat 3
available as convenient email tutorials. Register at The system will send
an email a day for a few weeks.
Email tutorials are available for all Efofex products.

similar documents