Livescribe PULSE - Manual (Page 46)

Page 46 Pulse
TM
Smartpen User Manual
Statistical Functions
The statistical section of the calculator performs mean average and standard deviation
calculations for single variable data sets. It also performs permutation and combination
calculations.
Using Mean and Standard Deviation Calculations
To use calculate mean and standard deviations, first enter a single variable data set. Enter each
value followed by the key. If you make an error, enter the incorrect value followed by the
key to remove it from the data set. Values not present in the data set can not be removed.
When data is present in the statistical register, a ‘Σ’ indicator appears. When data is added to or
removed from the statistical register the indicator blinks.
Once a data set is entered, you can:
• Tap to calculate the sample standard deviation.
• Tap to calculate the population standard deviation
• Tap to calculate the sample mean.
You can tap to clear the statistical register.
Using Combinations and Permutations
You can use the key to calculate the number of combinations of n things taken r at a time.
Example: To calculate the number of possible combinations of 24 things taken 6 at a time, enter
’24 6 =’. The display shows a result of 134,596.
You can use the key to calculate the number of permutations of n things taken r at a time.