Graphical Analysis^TM

The Data Menu

BHS -> Staff -> Mr. Stanbrough ->GA How-To Notes -> this page

• New Data Set: This will create a new data table in which you can type or paste new data.
• Delete Data Set: To delete a data set, select it, then choose this menu option. You can also delete a data set by clicking the "close box" in the upper-left corner of the window.

• The Rename Data Set Dialog

  Rename Data Set: To rename a data set, select it with the mouse, then choose "Rename Data Set" from the Data Menu. Type the new name into the dialog that appears.
• New Column: Select the data set window with the mouse, then choose "New Column" from the Data Menu. A new column will be added to the right of all existing columns in the data set.
• Column Formula: You can select an option from the "Column Formula" submenu to build a formula for a column
• Delete Column: Highlight the column you want to delete by clicking the mouse in its heading, then select "Delete Column" from the Data Menu. Poof!
  

• The Increment Dialog

  Increment: Instead of manually typing a whole list of data values that simply increase or decrease by a set amount, Graphical Analysis^TM will fill in the data column for you. Here's how:
  • Position the cursor at the first data value in the column.
  • Select "Increment" from the Data Menu.
  • Type in the starting value, the increment, and the ending value, then click the "OK" button.
• Sort: To sort a data column (smallest value at the top), highlight it, then select "Sort" from the Data Menu.
  

• The Data Statistics Dialog

  Statistics: To get statistics on a data column, highlight the column by clicking its heading, then select "Statistics" from the Data Menu. Statistics displayed include:
  • Data Set: This is a pull-down menu, so you can view column statistics for other data sets.
  • Column Label
  • Column Units
  • Number of Values
  • Mean (average)
  • Standard Deviation (a measure of the spread of the data - a large value means that the data is "spread out", a small value means that it is "clumped together")
  • Minimum
  • Maximum
• Color: To change the (graph) color of a data set, highlight it by clicking in its window. Select "Color" from the Data Menu. This will bring up a standard color dialog from which you can choose a new color.
  
• Data Options...: When you select "Data Options..." from the Data Menu, the dialog shown at right will be displayed. You can change:
  • Rounding: You can select a particular number of significant digits or decimal places.
  • Angle Measurement: You can select to measure angles in either degrees or radians.