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© 2012 Texas Instruments Educaon Technology Page 51
Press b411 to start the wizard,
again choose 1 list (remember mulple lists are for when you
want to calculate stascs for mulple lists at the same me).
This me we set the X1 List to be but change the
from 1 to , and set the Results Column
to be (which is the rst empty column).
This gives you the summary stascs for this grouped data –
Noce the mean comes out of to be just over 6, which
matches original data (as the shoe-sizes go from 4 to 8).
We can also graph this data. This can be achieved from either
the page by pressing b35 to insert a
, or from a Data and Stascs page by pressing
b25 to insert an . We will use
this second approach now, so create a new Data and Stacs
page by pressing c then selecng .
Then press b25, this will give you the Frequency
Plot wizard.
This will give you the following graph. This can also be
displayed as a box plot by pressing b12.
If you are dealing with grouped data you may need to adjust
the by pressing b222.
Save your document as FirstStepsComplete, so you can return to this if you want at a
later date.