Introduction to Statistics Calculator Basics Practice Name: Score: Instructions: In this section, we want to practice some basic arithmetic operations with your calculator. Note that this is written with TI calculators in mind. If you have a Casio fx-9750GII: instead of [Enter] your button says [EXE] and instead of [2nd] you have [SHIFT]. All other commands are the same for these fuctions. Solve the following arithmetic problems using your calculator. First record the button sequence used to get your answer using [ ] for buttons. Then record your answer. Example: Calculate 24(7 - 2) Button Sequence: [ 2] [4] [(] [ 7] [- 1[210) ] Solution: 96 1. Calculate 18 (2) Button Sequence: Solution: 2. Calculate 21 (12 - 1) Button Sequence: Solution: 3. Calculate 10 (63 ) 2 Button Sequence: Solution: 4. Calculate 8(6-2)2 Button Sequence: Solution: This next section, we're going to learn one key difference and one very useful tool for computations. Example: Calculate (-2)2 A few things we need to be carefule of here. If we enter [-][2] [2] we will get an error. This is because, to the calculator a minus sign and a negative sign are different. When we type [-], the calculator reads this as a minus sign and want to perform a subtraction operation. Since we didn't type any number before that sign, we get an error since the calculator is looking for something to subtract from. Its kind of like pushing [Play] on a Blu-Ray player that doesn't have a disc in it. Instead, we want to use this button: [(-)]. Now we can try typing [(-)][2][2]. The calculator will compute this without technical error, but it will give the wrong answer. Instead of 4, it will tell us the answer is -4. The calculator follows order of operations exactly; so its does the square first and then applies the negative. We should put parenthesis around the negative sign and the number itself. This: [([(-)][2]DI[2] will give the correct answer of 4