HP 10bII+ Financial manual YG\w6, Advanced Probability Distributions

Example

Store a seed value of 42; set the number display to 9. Then generate three random numbers.

Table 12-17 Example storing a seed value and generating random numbers

Keys	Display	Description
YG\w]6		generator seed.
	42.00	Stores 42 as the random number
\5d	42.000000000	Set display precision.
]6	.199873749	Generate first random number.
]6	.863046890	Generate second random
		number.
]6	.504024868	Generate third random number.
\5G	.50	Reset display to default setting.

Advanced Probability Distributions

The 10bII+ allows easy calculation of the Z and Student's T probability distribution values. In addition, it allows inverse calculations of both functions. The values are calculated using the lower tail probability. This lower tail probability corresponds to the area under the curve to the left of the input. If you need a value other than a lower tail, such as a two-sided value, please see the conversion instructions at the end of this chapter.

Table 12-18 Advanced probability keys

KeysDescription

]F	Calculates a cumulative normal probability
	given a Z-value.
]oF	Calculates a Z-value given a cumulative
	normal probability.
]I	Calculates the cumulative Student’s T
	probability given degrees of freedom and a
	T-value.
]oI	Calculates a T-value given degrees of
	freedom and the cumulative Student’s T
	probability.

These distribution functions replace the statistical tables found in the back of textbooks. Unlike the textbook, the calculator can calculate any value, not just a limited selection found in the table.

128 Statistical Calculations