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300 Programming

CritVal1 Contains the lower critical value of the experimental

variable associated with the negative TestScore value

which was calculated from the input α-level.

CritVal2 Contains the upper critical value of the experimental

variable associated with the positive TestScore value

which was calculated from the input α-level.

DF Contains the degrees of freedom for the t-tests.

Prob Contains the probability associated with the TestScore

value.

Result For hypothesis tests, contains 0 or 1 to indicate rejection

or failure to reject the null hypothesis.

TestScore Contains the Z- or t-distribution value calculated from the

hypothesis test or confidence interval inputs.

TestValue Contains the value of the experimental variable

associated with the TestScore.

App Functions

App functions are used by several of the HP Apps to

perform common calculations. For example, in the

Function app, the Plot view FCN menu has a function

called SLOPE that calculates the slope of a given function

at a given point. The SLOPE function can be used, from

the Home view or a program, etc. to give the same results

as if you were in the Function app Plot view. App

functions can be used to get the same results in a program

or the Home view or anywhere else- just as if you were in

the app. The App functions described in this section are

grouped by app.

Function app

functions

The Function app functions provide the same functionality

found in the Function app's Plot view under the FCN

menu. All of these operations work on functions. The

functions may be expressions in X or the names of the

Function app variable F0 through F9.

AREA Area under a curve or between curves. Finds the signed

area under a function or between two functions. Finds the

area under the function Fn or below Fn and above the

function Fm, from lower X-value to upper X-value.

HP 39gII User Manual

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