Use in ancient cultures[ edit ] Aztec women are handed flowers and smoking tubes before eating at a banquet, Florentine Codex16th century. Smoking's history dates back to as early as — BC, when the agricultural product began to be cultivated in Mesoamerica and South America ; consumption later evolved into burning the plant substance either by accident or with intent of exploring other means of consumption. Smoking in the Americas probably had its origins in the incense-burning ceremonies of shamans but was later adopted for pleasure or as a social tool. Eastern North American tribes would carry large amounts of tobacco in pouches as a readily accepted trade item and would often smoke it in ceremonial pipeseither in sacred ceremonies or to seal bargains.
Introduction This site provides illustrative experience in the use of Excel for data summary, presentation, and for other basic statistical analysis. I believe the popular use of Excel is on the areas where Excel really can excel. This includes organizing data, i. Microsoft Excel version 9 provides a set of data analysis tools called the Analysis ToolPak which you can use to save steps when you develop complex statistical analyses.
You provide the data and parameters for each analysis; the tool uses the appropriate statistical macro functions and then displays the results in an output table.
Some tools generate charts in addition to output tables. However, if the Data Analysis command is not on the Tools menu, you need to install the Analysis ToolPak by doing the following: On the Tools menu, click Add-Ins Once you find the file, select it and click OK.
If you don't find the Analys Select Run from the Windows Start menu. Browse and select the drive for your CD.
Click the Add or Remove Features button. Click the down arrow next to Analysis ToolPak.
Select Run from My Computer. Select the Update Now button. Excel will now update your system to include Analysis ToolPak.
Microsoft Excel is a powerful spreadsheet package available for Microsoft Windows and the Apple Macintosh. Spreadsheets are designed to work well with numbers but often include text. Excel organizes your work into workbooks; each workbook can contain many worksheets; worksheets are used to list and analyze data.
Excel is available on all public-access PCs i.
Saving and Closing a Document: To save your document with its current filename, location and file format either click on File - Save. When you have finished working on a document you should close it. Go to the File menu and click on Close.
If you have made any changes since the file was last saved, you will be asked if you wish to save them. The Excel screen Workbooks and worksheets: When you start Excel, a blank worksheet is displayed which consists of a multiple grid of cells with numbered rows down the page and alphabetically-titled columns across the page.
Each cell is referenced by its coordinates e. B20 is used to refer to the range of cells in column B and rows 10 through Your work is stored in an Excel file called a workbook.
To view a different worksheet in a workbook click the appropriate Sheet Tab. Moving Around the Worksheet: It is important to be able to move around the worksheet effectively because you can only enter or change data at the position of the cursor.
You can move the cursor by using the arrow keys or by moving the mouse to the required cell and clicking. Once selected the cell becomes the active cell and is identified by a thick border; only one cell can be active at a time.
To move from one worksheet to another click the sheet tabs. If your workbook contains many sheets, right-click the tab scrolling buttons then click the sheet you want.
The name of the active sheet is shown in bold. Here is a keyboard shortcuts to move the active cell: Note that the size of a scroll box indicates the proportional amount of the used area of the sheet that is visible in the window.
The position of a scroll box indicates the relative location of the visible area within the worksheet. Entering Data A new worksheet is a grid of rows and columns.Smoking bans (or smoke-free laws) are public policies, including criminal laws and occupational safety and health regulations, that prohibit tobacco smoking in workplaces and other public rutadeltambor.comation may also define smoking as more generally being the carrying or possessing of any lit tobacco product.
These days, popular musicians, household-name athletes, and even powerful politicians, are using their uh, high ranks to argue for the legalization of marijuana.
And everywhere we turn, we're likely to hear people arguing about whether the gateway drug for some, and cure for others, should be.
America is the only developed country with such high rates of gun violence. Here are six steps we can take to reduce those numbers. Root cause analysis must first distinguish between the problems caused by smoking and those that lead to smoking.
These are two separate (albeit, related) issues that each need to be considered individually in order to come to productive solutions.
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An Objective Analysis Of The QAnon Phenomenon April 19 | From: VigilantCitizen Claiming to be a high-level government insider, “Q” has been posting cryptic messages on 8Chan, unveiling the extent of the “deep state” while claiming that it is about to be taken down.