User manual CITIZEN LC-310III COMMAND LINE INTERFACE REFERENCE MANUAL

[. . . ] 3 Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Contrast Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Display Readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Before starting calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] See Example 3. Memory Calculation Press [ M+ ] to add a result to running memory. Press [ 2nd ] [ M­ ] to subtract the value from running memory. To recall the value in running memory, press [ MRC ]. To clear running memory, press [ MRC ] twice. See Example 4. E­6 The calculator has ten memory variables for repeated use : A, B, C, X, Y, X1, X2, PROG1 and PROG2. You can store a real number in variables A, B, C, X, Y, X1, X2 and an expression in PROG1 and PROG2. * [ SAVE ] lets you store values to variables. * [ 2nd ] [ RECALL ] recalls the value of variable. * [ 2nd ] [ CL-VAR ] clears all variables except PROG1, PROG2. * [ 2nd ] [ CL-PROG ] clears the contents of PROG1, PROG2. (Note) : Besides pressing [ SAVE ] key to store a value, you can also assign values to memory variable M by [ M+ ] or [ 2nd ] [ M­ ]. Closed parentheses occurring immediately before operation of the ] key may be omitted, no matter how many are required. [ See Example 16. E ­ 11 A multiplication sign " x " occurring immediately before an open parenthesis can omitted. (Note) : The calculator can auto-correct abbreviated multiplication in front of all functions, except memory variables, left parenthesis, type B functions. Henceforth, abbreviated type will not be used in this manual. The correct result cannot be derived by entering [ ( ] 2 [ + ] 3 [ ) ] [ EXP ] 2. Be sure to enter [ x ] 1 between the [ ) ] and [ EXP ] in the below example. See Example 19. Percentage Calculation [ 2nd ] [ % ] divides the number in the display by 100. You can use this key sequence to calculate percentages, add-ons, discounts, and percentages ratios. See Example 20~21. Continuous calculation function The calculator enables you to repeat the last operation executed ] key for further calculation. Even if calculations are concluded with the [ ] key, the result obtained can be used for further calculation. See Example 23. Answer Function Answer function stores the most recently calculated result. [. . . ] R ( t ) =1 ­ ( t ) Represent the cumulative fraction of the standard normal distribution that is greater than the value t Q ( t ) = | 0. 5 ­ ( t ) | R(t) Q(t) Linear regression Step : ( See Example 56. Based on the datasets in 2­VAR mode, press [ STATVAR ] and scroll through the statistical results menu by [ ] or [ ] to find out a, b, or r. To predict a value for x (or y) given a value for y (or x), select the x ' (or y ' variable, press [ ], enter the given value, ] again. (See table below) and press [ Variable a Meaning y -b x n Linear regression y-intercept a = Linear regression slope b = b r (n xy - x y ) (n x 2 - ( x )2 ) Correlation coefficient (n xy - x y ) r= (n x 2 - ( x )2 )(n y 2 - ( y )2 ) Predicted x values given a, b, and y vales y-a x' = b Predicted y value given a, b, and x value. [. . . ]