User manual CITIZEN SRP-285II

[. . . ] 3 Turning On And Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Changing a mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Using " 2nd " Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] See Example 9. 10 -9 are displayed in Display formats Decimal places formats are selected by pressing [ 2nd ] [ TAB ] to display the menu. To set decimal places to n ( F0123456789 ), ] key while the item is enter a n value directly or press [ underlined. (The default setting is floating point notation F and the n value is · ). Even if the number of decimal places is specified, internal calculation for a mantissa is performed up to 24 digits, and the display value is stored in 10 digits. To round off those values to the specified number of decimal places, press [ 2nd ] [ RND ]. Number display formats are selected by pressing [ 2nd ] [ SCI/ENG ] to display the menu. The items on the menu are FLO (for floating point), SCI ( for scientific), and ENG (for engineering). then press [ (Note) : The engineering format is similar to the scientific format, except the mantissa can have up to three digits left of the decimal, instead of only one, and the exponent is always a multiple of three. It is useful for engineers to convert units based on multiples of 10 3. See Example 14. Parentheses Calculation Operations inside parentheses are always executed first. SRP-285II can use up to 13 levels of consecutive parentheses in a single calculation. 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. 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. Once a numeric value ] is pressed, the or numeric expression is entered and [ result is stored by this function. [. . . ] Based on the datasets in 1­VAR mode, press [ DATA ] and there are three menu : DATA­INPUT, LIMIT­SET, DISTR. Press [ STATVAR ] and scroll through the statistical results ] or [ menu by [ ] to find out probability distribution variables you want. (See table below) E ­ 17 Variable t P(t) Meaning Test value Represent the cumulative fraction of the standard normal distribution that is less than the value t Represent the cumulative fraction of the standard normal distribution that lies between the value t and 0. 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. [. . . ]