Download Using your scientific calculator to find the standard

Using your scientific calculator to find the standard deviation and mean etc of a set of data
STAGE 1: Setting up the calculator
Follow these instructions to get the calculator into Stats Mode and to turn the frequency column on so that you can enter data
as a list with its corresponding frequency
Select SETUP Press the down arrow to access the 2nd set up screen
Select 3:STATS
Turn the Frequency Column on by pressing 1
STAGE 2: Entering the data
Select MODE
Select 2:STAT
Select 1:1-Var
You can now enter the data in the X list. Frequency can be altered if necessary.
When you have finished exit the entering data page by pressing AC
STAGE 3: Accessing the values you want
Select STAT do this by pressing the SHIFT key and then the number 1 on the numeric key pad
From this screen you can look at the data entered by selecting option 2 (AC to end)
You can find the values of
x
and
x
2
by selecting option 3
By selecting option 4 and Pressing 1 you can find out how many items of data there are
Pressing 2 you can find the mean of the data ( x )
Pressing 3 you can calculate the Root Mean Squared ( x )
Presing 4 you can find the Standard Deviation that we use with AQA ( SX )
(Note this is actually the unbiased estimate for the popiulation
standard deviation. It is the bigger of the two available deviations)
Using your scientific calculator to find the standard deviation and mean etc of a set of data
STAGE 1: Setting up the calculator
Follow these instructions to get the calculator into Stats Mode and to turn the frequency column on so that you can enter data
as a list with its corresponding frequency
Select SETUP Press the down arrow to access the 2nd set up screen
Select 3:STATS
Turn the Frequency Column on by pressing 1
STAGE 2: Entering the data
Select MODE
Select 2:STAT
Select 1:1-Var
You can now enter the data in the X list. Frequency can be altered if necessary.
When you have finished exit the entering data page by pressing AC
STAGE 3: Accessing the values you want
Select STAT do this by pressing the SHIFT key and then the number 1 on the numeric key pad
From this screen you can look at the data entered by selecting option 2 (AC to end)
You can find the values of
x
and
x
2
by selecting option 3
By selecting option 4 and Pressing 1 you can find out how many items of data there are
Pressing 2 you can find the mean of the data ( x )
Pressing 3 you can calculate the Root Mean Squared ( x )
Presing 4 you can find the Standard Deviation that we use with AQA ( SX )
(Note this is actually the unbiased estimate for the popiulation
standard deviation. It is the bigger of the two available deviations)