Reset xlist and ylist ti843/5/2023 ![]() To manually adjust the window settings, press the WINDOW button, then enter suitable values and press GRAPH. Here is the histogram you should get using ZoomStat: ![]() This is usually the most expedient way to choose an appropriate window, but you may still need to adjust the window slightly. Now press ZOOM, then move the cursor down to ZoomStat:Īnd press ENTER. Your screen should then look something like what you see above. For some reason, the TI-84 defaults to the alpha-lock when this entry is highlighted if you need to change the frequency to 1 from something else, you'll need to press ALPHA to turn off the alpha-lock, then type the number 1. If Freq is not automatically set to 1 (it usually is) then you'll need to reset it to 1. If Xlist is not already set to L1 (or the name of the list with your data), move the cursor down, then type L1 ( 2ND and then the 1 key) and press ENTER to designate L1 as the Xlist. Now move the cursor down and then right two spaces so that it highlights the histogram icon, then press ENTER: Move the cursor over On and press ENTER to turn on Plot1: Press 2ND then STAT PLOT (above the Y= key) to get to the STAT PLOTS menu: We can now draw a histogram with the TI-84 using the assessed value data in list L1. To exit the list editor, press 2ND then QUIT (above the MODE key). Because there are 14 houses in the data set, this is what we want to see. This means that the 14th entry in list L1 is 304. Notice that when you move the cursor over the last entry in the list it says L1(14) = 304. If you enter the 2007 assessed value data into list L1 on your TI-84 (from here on out I'll just write "TI-84" so that I don't have to type "TI-83 or TI-84" repeatedly) your screen should look something like this: Repeat this until you have entered all of the data. ![]() To enter data once the entries in the list have been cleared, move the cursor to the first position in the list, type a number, then press ENTER. You can, however, use the DEL key to delete a single entry in a list. To restore a deleted list move the cursor to the name of another list, press 2ND and then INS (for insert, above the DEL key), then press 2ND and then L1 (above the 1 key, or another key for the name of the list you want to insert). DO NOT press the DEL key when the list name is highlighted: this will delete the entire list, rather than its contents. Then press CLEAR and ENTER all of the data in the list should disappear. If a list you want to use already contains data and you want to clear the list, move the cursor up so that the list name (e.g. Use the arrow keys to move up and down in a list, or the left and right arrows to move from one list to another. Next press ENTER and you should be in the list editor: (To complicate matters there is also a LIST menu above the STAT key, but we don't want to use this right now, so ignore it for the time being.) The TI-83 and TI-84 have six built-in lists, called L1, L2, 元, L4, L5 and L6. Before we can graph data using the calculator, we need to enter the data into a list. We'll start with the 2007 assessed value.įirst, turn the calculator on by pressing the ON key at the lower-left corner. Let's graph one of the quantitative variables. For each house I recorded the house number, the size (in square feet), the 2007 assessed value (in thousands of dollars), the lot size (in acres), the 2006 taxes (in dollars) and the number of stories. Let's work with the following data about the single-family residences on a street in Edmonds, Washington. I collected this data on October 3, 2006, from the Web site of the Snohomish County Assessor. The instructions below will guide you through working on the TI-83 or TI-84 to compute summary statistics for a single quantitative variable and graph histograms and boxplots. So far we've created graphs and summary statistics "by hand' but that can quickly become cumbersome, so we often rely on technology to perform these tasks more quickly.
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