By this calculator you can determine the value of an arbitrary arithmetic expression using the following arithmetic operations, functions or constants and any parenthesis structure.
+ , - , * , / , ^
sqrt, sqr,
sin, cos, tan,
exp, ln, log, pow,
abs, round,
biko, fak, phi, phi_quant,
sum
| biko(n,k) | binomial coefficient n over k |
| fak(n) | n faculty |
| ln(x)=log(x) | natural logarithm (log base e) |
| pow(a,b)=a^b | power function |
| phi(z) | distribution function of standardized normal distribution |
| phi_quant(p) | p-quantile of standardized normal distribution, 0<p<1 |
| sum(f(i),i,i0,i1) | sum over f(i) for i=i0,…,i1, name of summation index can be freely selected |
| prod(f(i),i,i0,i1) | product over f(i) for i=i0,…,i1, name of product index can be freely selected |
pi, e
res - the last actual result,
c1, c2, c3 - memories for interim results.
You can include these constants into arithmetical expressions.
( , )
name - name of constant
value - arithmetic expression
The definition is activated by click to
=
A correct definition is confirmend by OK and the constant is diplayed in constant window.
Example: def(5pi:5*pi)
name - name of function and name of independent variable in brackets, e.g. f1(x)
definition - arithmetic expression depending on independent variable
Example: def(f1(x):x*x)
Each definition is to activate by click to
=
A correct definition is confirmend by OK and the functiom is diplayed in function window.
Examples:
def(tan(x):sin(x)/cos(x))
def(mysqr(z):z*z)
def(2_power(x): prod(2,i,1,x)) -> 2^x
1+1/(1+1/(1+1))
phi_quant(0.95)
sqr(sin(1.3))+cos(1.69^0.5)*sqrt(1-sin(2-0.7)*sin(1+0.3))
sum(i*i,i,1,10)
Some further 'examples':
(1+3
1+3*a
(1-1/(ln(sqr(sin(3*pi))+sqr(cos(exp(ln(5*pi)))))))
: -)
Function: Computes to a given evaluation structure and corresponding checklist data estimation values
for the scores
Syntax: eva(sure_data_record)
The sure_data_record contains in form of a standard text file the model structure as well the checklist data in form of a CSV(comma separated values)-file.
Structure of sure_data_record:
| $r,$ |
| $s_1,...,s_r,$ |
| $x_{11}^{(1)},...,x_{1s_1}^{(1)},...,x_{r1}^{(1)},...,x_{rs_r}^{(1)},$ |
| $\cdots$ |
| $x_{11}^{(n)},...,x_{1s_1}^{(n)},...,x_{r1}^{(n)},...,x_{rs_r}^{(n)}$ |
Here denotes:
| - number of key goals | |
| - number of sub goals of |
|
| - observation value for the |
|
| - sample size |
For a more transparent presentation the sure_data_record can contain spaces and line breaks.
Input
Result
Function: Computes to a given evaluation structure and corresponding checklist data estimation values
for the calibrated scores
Syntax: ceva(sure_data_record)
For definition of sure_data_record see we refer to eva-procedure.
Example:
Input
Result
Function: Generates to a given SURE model data record an HTML-table with the corresponding score estimation values obtained by eva-procedure.
Syntax: eva_html_tab0(sure_data_record)
For definition of sure_data_record see we refer to eva-procedure.
Example:
Input
Result
Function: Generates to a given SURE model data record an HTML-table with the corresponding calibrated score estimation values obtained by ceva-procedure.
Syntax: ceva_html_tab0(sure_data_record)
For definition of sure_data_record see we refer to eva-procedure.
Example:
Input
Result
Function: Generates random SURE model data record.
Syntax: eva_rand
| number of key goals | |
| number of sub goals of |
|
| bounds for evaluation interval, |
|
| bound for random scores, |
|
| sample size |
Example:
Input
Result
Function: Generates to a given SURE model data record a LaTeX-table with the corresponding score estimation values obtained by eva-procedure. The check list data are vertically oriented.
Syntax: eva_tex_tab0(sure_data_record)
For definition of sure_data_record see we refer to eva-procedure.
Example:
Input
Result
Function: Generates to a given SURE model data record a LaTeX-table with the corresponding calibrated score estimation values obtained by ceva-procedure. The check list data are vertically oriented.
Syntax: ceva_tex_tab0(sure_data_record)
For definition of sure_data_record see we refer to eva-procedure.
Example:
Input
Result
Function: Generates to a given SURE model data record a LaTeX-table with the corresponding score estimation values obtained by eva-procedure. The check list data are horizontally oriented.
Syntax: eva_tex_tab1(sure_data_record)
For definition of sure_data_record see we refer to eva-procedure.
Example:
Input
Result
Function: Generates to a given SURE model data record a LaTeX-table with the corresponding calibrated score estimation values obtained by ceva-procedure. The check list data are horizontally oriented.
Syntax: ceva_tex_tab1(sure_data_record)
For definition of sure_data_record see we refer to eva-procedure.
Example:
Input
Result
Welcome to our web site meercats.org.
