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Calculadoras - 85MS (287.52 kb)

~t(F) y = 1. • Press ~c(E) to display the value of x , or ~t(F) to display the value of y . fx-82SX PLUS/220 PLUS: q9 2 ((,) 45 = x = 1. !q( y , ) = y = 1. • Press !r( x , r ) = to display the value of x , or !q( y , ) = to display the value of y . (5 + 3) ! = 40320 ( 5 + 3 )1E( x! )= 40320. To obtain two random three-digit integers 1000 1.(Ran#) = 459. = 48. (Actual results will differ.) To generate random integers in the range of 1 to 6 (fx-82SX PLUS/220 PLUS only) 12(RanInt) 1 1((,) 6 )= 2. = 6. (Actual results will differ.) To determine the number of permutations and combinations possible when selecting four people from a group of 10 Permutations: 10 1{( n P r ) 4 = 5040. Combinations: 10 {4 = 210. To perform the following calculations when Fix 3 is selected for the number of display digits: 10 . 3 . 3 and Rnd(10 . 3) . 3 N 1(Fix) 3 10 / 3 * 3 = 10.000 10 / 3 =10(Rnd) * 3 = 9.999 15. Statistical Calculations (SD, REG*) *fx-82MS/85MS/300MS/350MS only To select this type of statistical calculation: (Regression formula shown in parentheses) Perform this key operation: Single-variable (X) ,2(SD) Paired-variable (X, Y), linear regression ( y = A + Bx) ,3(REG)1(Lin) Paired-variable (X, Y), logarithmic regression ( y = A + Blnx) ,3(REG)2(Log) Paired-variable (X, Y), e exponential regression ( y = AeB x ) ,3(REG)3(Exp) Paired-variable (X, Y), power regression ( y = AxB) ,3(REG)e1(Pwr) Paired-variable (X, Y), inverse regression ( y = A + B/x) ,3(REG)e2(Inv) Paired-variable (X, Y), quadratic regression ( y = A + Bx + Cx2) ,3(REG)e3(Quad) Inputting Data • In the SD Mode and REG Mode, the l key operates as the 7 key. • Always start data input with !,(CLR) b(Scl) = ( rb(Scl) = on the fx-82SX PLUS/220 PLUS) to clear statistical memory. • Input data using the key sequence shown below. SD Mode: < x -data> 7 REG Mode: < x -data> , < y -data> 7 • 77 inputs the same data twice. • You can also input multiple entries of the same data using !,(;) ( !)(;) on the fx-82SX PLUS/220 PLUS). k 8 9 10 11 12 13 Data Input Precautions • While inputting data or after inputting data is complete, you can use the f and c keys to scroll through data you have input. If you input multiple entries of the same data using !,(;) ( !)(;) on the fx-82SX PLUS/220 PLUS) to specify the data frequency (number of data items) as described above, scrolling through data shows both the data item and a separate screen for the data frequency (Freq). • Input the new value and then press the = key to replace the old value with the new one. This also means that if you want to perform some other operation, you should always press the A key first to exit data display. • Pressing the 7 key instead of = after changing a value on the display registers the value you input as a new data item, and leaves the old value as it is. • You can delete a data value displayed using f and c by pressing !l(CL). Deleting a data value causes all values following it to be shifted up. • The message “Data Full” appears and you will not be able to input any more data if there is no memory left for data storage. If this happens, press the = key to display the screen shown below. Press c to exit data input without registering the value you just input. Press b if you want to register the value you just input. If you do this, however, you will not be able to display or edit any of the data you have input. • After inputting statistical data in the SD Mode or REG Mode, you will be unable to display or edit individual data items any longer after perform either the following operations: changing to another mode; changing the regression type. • Entering the REG Mode and selecting a regression type (Lin, Log, Exp, Pwr, Inv, Quad) clear variables A through F, X, and Y. • Do not use variables A through F, X, or Y to store data when performing statistical calculations. Obtaining Statistical Values from Input Data Supported statistical variables and the keys you should press to recall them are shown below. fx-82SX PLUS/220 PLUS: Sum: . x 2 , . x , Number of Items: n , Mean: o, Population Standard Deviation: . x , Sample Standard Deviation: s x !e to j fx-82MS/85MS/300MS/350MS: For single-variable statistical calculations, the variables marked with an asterisk (*) are available. Sum: . x 2 *, . x *, . y 2 , . y , . xy , . x 3 , . x 2 y , . x 4 , Number of Items: n * . x 2 , . x , n ........... !b(S-SUM) b to d . y 2 , . y , . xy ........ !b(S-SUM) e b to d . x 3 , . x 2 y , . x 4 ..... !b(S-SUM) ee b to d(Quadratic Regression only) Mean: o*, p, Population Standard Deviation: . x *, . y , Sample Standard Deviation: s x *, s y o, .x, sx ..............!c(S-VAR) b to d p, .y, sy ...............!c(S-VAR)e b to d Regression Coefficients: A, B, Correlation Coefficient: r Regression Coefficients for Quadratic Regression: A, B, C !c(S-VAR)ee b to d Estimated Values: m, n Estimated Values for Quadratic Regression: m1, m2...

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