Menu location: Tools_StatsDirect Calculator.
The StatsDirect calculator can be used both within StatsDirect and independently as a replacement for the Windows calculator. The calculator evaluates expressions in the form of simple arithmetic or more complex algebra.
All calculations are performed in IEEE-754 double precision (64-bit).
The 'save' button copies the expression currently evaluated and its result to a list from which you can select saved expressions to paste into new ones.
When you close the calculator it will paste saved expressions and results into a report in StatsDirect if the "save results to report on exit" box at the bottom left of the calculator is checked.
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Constants |
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PI |
3.14159265358979323846 (p) |
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EE |
2.71828182845904523536 (e) |
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Arithmetic Functions |
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ABS |
absolute value |
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CLOG |
common (base 10) logarithm |
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CEXP |
anti log (base 10) |
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EXP |
anti log (base e) |
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LOG |
natural (base e, Napieran) logarithm |
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LOGIT |
logit: log(p/(1-p), p=proportion |
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ALOGIT |
antilogit: exp(l)/1+exp(l), l=logit |
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SQR or SQRT |
square root |
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! |
factorial (maximum 170.569) |
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LOG! |
log factorial |
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IZ |
normal deviate for a p value |
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UZ |
upper tail p for a normal deviate |
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LZ |
lower tail p for a normal deviate |
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TRUNC or FIX |
integer part of a real number |
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CINT |
real number rounded to nearest integer |
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INT |
real number truncated to integer closest to zero |
Please note that the largest factorial allowed is 170.569398315538748, but you can work with Log factorials via the LOG! function, e.g. LOG!(272).
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Arithmetic Operators |
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^ |
exponentiation (to the power of) |
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+ |
addition |
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- |
subtraction |
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* |
multiplication |
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/ |
division |
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\ |
integer division |
Calculations give an order of priority to arithmetic operators, this must be considered when entering expressions. For example, the result of the expression "6 - 3/2" is 4.5 and not 1.5 because division takes priority over subtraction.
Priority of arithmetic operators in descending order
Exponentiation (^)
Negation (-X) (Exception = x^-y; i.e. 4^-2 is 0.0625 and not -16)
Multiplication and Division (*, /)
Integer Division (\)
Addition and Subtraction (+, -)
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Trigonometric Functions |
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ARCCOS |
arc cosine |
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ARCCOSH |
arc hyperbolic cosine |
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ARCCOT |
arc cotangent |
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ARCCOTH |
arc hyperbolic cotangent |
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ARCCSC |
arc cosecant |
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ARCCSCH |
arc hyperbolic cosecant |
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ARCTANH |
arc hyperbolic tangent |
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ARCSEC |
arc secant |
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ARCSECH |
arc hyperbolic secant |
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ARCSIN |
arc sine |
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ARCSINH |
arc hyperbolic sine |
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ATN |
arc tangent |
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COS |
cosine |
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COT |
cotangent |
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COTH |
hyperbolic cotangent |
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CSC |
cosecant |
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CSCH |
hyperbolic cosecant |
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SIN |
sine |
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SINH |
hyperbolic sine |
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SECH |
hyperbolic secant |
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SEC |
secant |
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TAN |
tangent |
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TANH |
hyperbolic tangent |
To convert degrees to radians, multiply degrees by pi/180. To convert radians to degrees, multiply radians by 180/pi.
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Logical Functions |
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AND |
logical AND |
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NOT |
logical NOT |
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OR |
logical OR |
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< |
less than |
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= |
equal to |
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> |
greater than |