Texas Instruments TI-30XS - Manual (Page 36)

Copyright © 2006 Texas Instruments Incorporated 36
This line of best fit, y'=0.67732519x'-18.66637321 models the
linear trend of the data.
The linear model gives an estimated braking distance of
18.59 meters for a vehicle traveling at 55 kph.
Probability
H
This key displays two menus: PRB and RAND.
PRB contains the following options:
$$
<
Press $ to view a and b.
Press $ until y' is highlighted.
< 55 E <
nPr Calculates the number of possible
permutations of n items taken r at a time,
given n and r. The order of objects is
important, as in a race.
nCr Calculates the number of possible
combinations of n items taken r at a time,
given n and r. The order of objects is not
important, as in a hand of cards.