USING THE TI PROGRAMMABLE CALCULATOR FOR STATISTICS

The MPI programme expects you to be able to calculate and understand a number of statistical parameters and tests. The calculator can take some of the hard work out of this process but you still need to understand why you have selected to use a particular test and what it means.

Use the key

Press

This gives you a menu

You will already be in the EDIT menu. Press

This opens a spread sheet

You can see if there is anything stored in the columns of the spread sheet. Check this and if there are data you need to clear it;

• To clear the spread sheet

Press You will be in the EDIT menu. Press You will get "ClrList" Press then You have now cleared column L1 Repeat the process (STAT, 4, 2nd, L2, ENTER etc….) to clear the other columns

• To enter data

Press You will be in the EDIT menu. Select This opens a spread sheet type in the first number, then second number then etc If you are comparing two sets of data do the same thing in column L2

• To find out mean, median, standard deviation and more besides!

Press Use the cursor to move across to the CALC menu You will find a menu which permits you to calculate a large number of statistical parameters Most of what we want is in 1:1-Var Stats. The first on the list. Press 1-Var Stats appears Press then and You will get: the mean Sx (the standard deviation of the sample) s x (the standard deviation of a population) n (the number in the sample) Scroll down for more! Med (the median)

• You can do other things with the calculator!

Using the calculator as a counter

If you want to count an event without taking your eyes away from it, it is convenient to have a counter.

Press (the yellow key) + etc

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