User manual CASIO FX-570AD

[. . . ] · Calculation Modes and Setup (page 7) Clearing the Calculation Mode and Setup Settings (page 10) · Calculator Memory Operations (page 19) · Statistical Calculations (SD/REG) (page 38) · Program Mode (PRGM) (page 62) k About this Manual · Most of the keys perform multiple functions. or a and then another key will perform the alternate function of the other key. Alternate functions are marked above the keycap. Alternate function sin­1{D} Keycap function s Alternate function operations are notated in this manual as shown below. ­1 Example: !s(sin )bw The notation in parentheses indicates the function executed by the preceding key operation. E-1 · The following shows the notation used in the manual for menu items that appear on the display (which are executed by pressing a number key). [. . . ] · The r-value (or x-value) produced by the calculation is assigned to variable X, while the -value (or y-value) is assigned to variable Y (page 22). To view the -value (or y-value), display the value assigned to variable Y, as shown in the example. · The values obtained for when converting from rectangular coordinates to polar coordinates is within the range ­180°< < 180°. · When executing a coordinate conversion function inside of a calculation expression, the calculation is performed using the first value produced by the conversion (r-value or xvalue). 2, 2 Example: Pol (' ') + 5 = 2 + 5 = 7 E-30 k Other Functions x!, Abs(, Ran#, nPr, nCr, Rnd( The x!, nPr, and nCr functions can be used in the CMPLX Mode, but complex number arguments are not supported. A Factorial (!) Syntax: {n}!({n} must be a natural number or 0. ) Example: (5 + 3)!(5+3) 1X(x!)E (5+3 ) ! 40320 A Absolute Value (Abs) When you are performing a real number calculation, Abs( simply obtains the absolute value. This function can be used in the CMPLX Mode to determine the absolute value (size) of a complex number. See "Complex Number Calculations" on page 34 for more information. Syntax: Abs({n}) Example: Abs (2 ­ 7) = 5 1)(Abs)2-7)E Abs ( 2 ­ 7 ) 5 A Random Number (Ran#) This function generates a three-decimal place (0. 000 to 0. 999) pseudo random number. It does not require an argument, and can be used the same way as a variable. Frequency Setting Calculation Mode SD Mode REG Mode FreqOn 40 items 26 items FreqOff 80 items 40 items A Sample Data Clear All sample data currently in memory is cleared whenever you change to another calculation mode and when you change the statistical frequency setting. k Performing Single-variable Statistical Calculations To perform the example operations in this section, first select SD (N4) as the calculation mode. A Inputting Sample Data Frequency On (FreqOn) The following shows the key operations required when inputting class values x1, x2, . . . xn, and frequencies Freq1, Freq2, . . . {x1}1, (;) {Freq1}m(DT) {x2}1, (;) {Freq2}m(DT) {xn}1, (;) {Freqn}m(DT) Note If the frequency of a class value is only one, you can input it by pressing {xn}m(DT) only (without specifying the frequency). E-38 Example: To input the following data Class Value (x) 24. 5 25. 5 26. 5 Frequency (Freq) 4 6 2 24. 51, (;)4 24 . 5 ; 4I 0 L i ne = m(DT) 1 L i ne = m(DT) tells the calculator this is the end of the first data item. 25. 51, (;)6m(DT) 2 L i ne = 26. 51, (;)2m(DT) 3 Frequency Off (FreqOff) In this case, input each individual data item as shown below. {xn}m(DT) A Viewing Current Sample Data After inputting sample data, you can press c to scroll through the data in the sequence you input it. The $ symbol indicates there is data below the sample that is currently on the display. The ` symbol indicates there is data above. Example: To view the data you input in the example under "Inputting Sample Data" on page 38 (Frequency Setting: FreqOn) A I 0 x 1= c 245 F r e q 1= c 4 E-39 c x 2= 255 F r eq2= c 6 When the statistical frequency setting is FreqOn, data is displayed in the sequence: x1, Freq1, x2, Freq2, and so on. In the case of FreqOff, it is displayed in the sequence: x1, x2, x3, and so on. You can also use f to scroll in the reverse direction. A Editing a Data Sample To edit a data sample, recall it, input the new value(s), and then press E. Example: To edit the "Freq3" data sample input under "Inputting Sample Data" on page 38 Af F r eq3= 2 F r eq3= 3E A Deleting a Data Sample To delete a data sample, recall it and then press 1m(CL). 3 Example: To delete the "x2" data sample input under "Inputting Sample Data" on page 38 Accc x 2= 255 L i ne = 1m(CL) Note · The following shows images of how the data appears before and after the delete operation. Before After 2 Freq1: 4 Freq2: 2 x1: 24. 5 x2: 25. 5 x3: 26. 5 Freq1: 4 Freq2: 6 Freq3: 2 x1: 24. 5 x2: 26. 5 Shifted upwards. · When the statistical frequency setting is turned on (FreqOn), the applicable x-data and Freq data pair is deleted. E-40 A Deleting All Sample Data Perform the following key operation to delete all sample data. 19(CLR)1(Stat)E If you do not want to delete all sample data, press A in place of E in the above operation. A Statistical Calculations Using Input Sample Data To perform a statistical calculation, input the applicable command and then press E. [. . . ] · Simplify the calculation expression so it does not exceed the capacity of the stacks. · Try splitting the calculation into two or more parts. For information about the capacities of the stacks, see "Stack Limitations" on page 72. Syntax ERROR Cause Action Arg ERROR Cause Action The calculation has a problem with how an argument being used. Check how arguments are being used and make the required corrections. [. . . ]