259 Lecture 1 – Spring 2013 Introduction to Excel
Excel 2003 Definitions and Terminology Title Bar Standard Toolbar Name Box Formula Bar Pulldown Menus Row 15 Cell D15 Column D Sheet Tab
Excel 2003 Definitions and Terminology Label (text) Constant (number) Formula (function) Notice that the formula in B8 appears in the Formula Bar
Excel 2007/2010 Definitions and Terminology Office Button Ribbon Home Tab Formula Bar Title Bar Name Box Workbook View Shortcut Row 15 Cell D15 Menu Button Column D Zoom Slider Sheet Tab 4
To show contents of cells, use ctrl` or on the Formulas tab, in the Formula Auditing group, click Show Formulas.
Ideas used for Example 1 • Entering labels, constants, and formulas • Formatting cells (font, alignment, number) • Adjusting column width and row height • Fill down and fill right • Built-in functions AVERAGE and SUM
Ideas used for Example 2 • Fill Handle • Merge and Center • Fill Color • Borders • Hyperlink • Format Painter
Example 3: Use Excel to create a plot of Toad Growth • The following table shows the land area in Australia colonized by the American marine toad (Bufo marinis). • Let’s make a plot of Year vs. Area on a Cartesian coordinate system (Year is on the x – axis …)
Making a Chart • Open up a blank Excel worksheet and enter the data for the toad population of Australia over time in the first two columns. • Highlight the cells with data including headings. • On the Insert tab, look in the Charts group for the different types of charts that can be chosen.
Step 1 – Chart Type • The first thing we need to do is to choose an appropriate chart to display the data – in this case we want to show the relationship between the toad population and a given year. • By moving the cursor over a type of chart, you will get a description of how the chart can be used. • A scatter plot compares pairs of values. • Click on the Scatter chart type and choose Scatter with only Markers (the top-left-most chart).
Step 2 – Chart Design and Location • A chart will appear in the sheet. • In the Design tab (under Chart Tools), use the Chart Layout and Chart Styles menus to adjust your chart if needed. • Choose a chart layout without any horizontal lines. • Also note that the chart can be moved to its own sheet via the Move Chart Location menu.
Step 3 – Chart Options • In the Layout tab, under the Design Tools, use the appropriate menus to remove the legend, add a Chart Title, and add axis labels (Axis Titles). • Other chart features can be adjusted from these menus. • For example, we can add a trendline.
Adding a Trendline • Once we have a scatter plot, we can try to find a curve that fits the data. • The simplest type of curve is a straight line or “best fit line”. • Right click on any data point in the chart and choose Add Trendline. • In the new window, choose Linear for the Trend/Regression Type and check the Display Equation on Chart box. • Here is the resulting chart with trendline included! • In this case, the best fit line is y = 13568 x – 3*10^7.
Making a Chart “Automatically” • A chart can also be made by highlighting the data to be put in the chart and pressing the F11 key. • The default chart is a bar chart. • From the Change Chart Type menu you can choose a new chart type and perform the same steps as above!
Importing data from a text file • Often the data we need is given as ASCII characters in a text file. • We can use Excel to open the file and help put the data into into “more usable” form.
Importing data from a text file (cont.) • From Excel, open up the text file that contains the data, with commas or spaces between each piece of data. • The Text Import Wizard will appear!
The Text Wizard • Choose “Delimited” and click Next. • Choose Comma in the Check-box and click Next. • Set the column formats and choose Finish. • The data should be in Excel!
Ideas used for Example 3 • Making a chart with the Chart Wizard • Using F11 to create a chart automatically • Importing data from a text file
Example 4 (cont.) • Creating the first three columns in the table for Example 4 with user-defined functions is straightforward. • For the last column, notice that if we let x(n) = 1+2+ … + n, then we have • x(1) = 1 • x(2) = 3 = 1 + 2 = x(1) + 2 • x(3) = 6 = 1 + 2 + 3 = x(2) + 3 • … • In general, x(n) = x(n-1) + n for n ≥ 2. • Functions like this are called recurrence relations and can be implemented with Excel!
Example 4 (cont.) • To print out a table that appears on more than one page, choose the Page Layout tab. • Then choose either Print Titles or the dropdown menu from the Page Setup group. • Click on the Sheet tab and choose the rows to repeat at the top of each page!
Ideas used for Example 4 • Fill handle • Fill down • Creating a formula • Page setup for printing • Recurrence relation
Example 5: Sorting Data • Excel is excellent for sorting data in lists or tables! • For example, suppose we wish to sort a list of famous mathematicians by given Birth Year, Name, and Birth Year followed by Name! • First put the data into an Excel worksheet with Birth Year in column A and Name in column B.
Example 5 (cont.) • To sort by Birth Year, click on any cell in the Birth Year column (column A). • Then click on the Sort Smallest to Largest button. • Repeat with column B to sort by Name!
Example 5 (cont.) • Another option is to choose a cell within the data you wish to sort. • Then click on the Data tab and choose Sort. • The Sort menu allows recursive sorting in either ascending or descending order!
Example 5 (cont.) • When working with data, a useful tool for choosing portions of the data is the AutoFilter. • Select a cell in the data you wish to study, click on the Data tab, and choose the Filter button.
Example 5 (cont.) • With the AutoFilter, you can look at subsets of the data, for example the mathematicians born between 1600 and 1899. • To do so, choose the Number Filters menu in the first column and fill in the Custom AutoFilter accordingly.
Ideas used for Example 5 • Sort Smallest to Largest button • Sort menu • AutoFilter
Homework 1 (due Monday, 1/14/13) • Read the Excel Tutorial posted on our class web page, take the online quiz, and turn in a printed copy of your quiz and quiz score at the beginning of class.