Lecture 2 Math 15 – Introduction to Scientific Data Analysis Introduction to spreadsheet February 4, 2008

Lecture 2Math 15 – Introduction to Scientific Data Analysis

Introduction to spreadsheet

February 4, 2008

TA for this Course

Ms. Debye ConteE-mail: [email protected]

Office Hours: TBA

UC Merced - Math 15 3

Grading for Math 15• Distribution of letter grades will depend on the

overall performance of the students in the course

Grade Total points achieved

A Over 425

B Over 375

C Over 325

D Over 275

Minimum grades guaranteed to students achieving the indicated percentage of the total possible points

Activity Points % Final Grade

Assignments 100 20%

In-Class Quizzes 100 20%

Computer Labs 60 12%

Project #1 70 14%

Project #2 70 14%

Final Exam 100 20%

Total 500 100%


Computer Labs

Attending computer labs is not mandatory. However, finishing each week’s lab works is mandatory.

Even though you miss computer labs, you can still receive lab points by submitting your weekly lab no later than the beginning of the week lecture.

Lab will start this week!


In-Class Quizzes

There will be in-class quizzes every other week. Quizzes will be given in the first 15-miniutes of

lectures. Each quiz will be worth 20 points. First quiz will be given on February 4th, 2008. Open book and Open notebook Quizzes.


Projects

Two Projects: #1 Statistical analysis with Excel (70 pts.) #2 Programming Project (70 pts.)

Projects can be performed individually or in groups of three, with following rules: No late project will be accepted! Teams turn in one project report and get the same grade. A team consists of at most 3 people—no copying between

teams! Team project report must include a title page, where a team

describe each team member’s contribution. 10% bonus for projects done individually Individual projects must not be copied from anyone else


Final Exam

It will be given in the final exam week! Open Books (?) and Open Notes

including old quizzes! We will give you more details later, but …

If you study and review all Quizzes, you should be fine!


Any Questions?

Qualitative Data Analysis: Cat


Observation Apparent from the

picture or image Interpretation

Your thought or conclusion from the observation


Again! Look Carefully!

We found Nemo!


Teaching Philosophy

“I hear and I forget.I see and I remember.I do and I understand.”

Confucius 500 B.C.

No Pain! No Gain!


Goal for 1st Half (2nd -7th weeks) To develop skills using Excel (Spreadsheet)

to collate, organize, analyze (including Statistical analysis), and present numerical information!


Other Spreadsheets. You don’t need to use Microsoft Excel or

Office. However, Microsoft Work is not a good one.

Free non-Microsoft “Office” suite software OpenOffice

http://www.openoffice.org

NeoOffice – For Mac User http://www.neooffice.org


No big difference

Microsoft Excel 2003 OpenOffice – CalcNeoOffice - Calc


More differences here

Microsoft Excel 2003 Microsoft Excel 2007


Any Questions?


Spreadsheet Fundamentals

This Week: Learning some simple operations of

Microsoft Excel (or OpenOffice Calc).


Identify major components of the Excel window Excel is a computerized spreadsheet, which is an

important tool that helps you analyze information.

Excel stores spreadsheets in documents called workbooks.

Each workbook is made up of individual worksheets, or sheets. When you open Excel, by default it will open a blank workbook

with three blank worksheets.


Excel components

•Each column is assigned Letter.•Each row is assigned Numerical Number.

D11 (Cell)


Resize worksheet rows and columns There are a number of methods for altering row

height and column width using the mouse or menus: Here is the easiest one: Click the dividing line on the

column or row, and drag the dividing line to change the width of the column or height of the row


Any Questions?


Entering Formulas

A formula is a mathematical expression that calculates a value.

In Excel, formulas always begin with an equal sign (=).

A formula can consist of one or more arithmetic operators.


Arithmetic Operators

= (B1 - D15*B15)/(A1+B2^3)


Use Excel’s Predefined functions Excel supplies more than 350 functions

predefined formulae for a commonly used calculation.


Define functions, and functions within functions A basic formula example to add up a small number

of cells is =A1+A2+A3+A4, but that method would be cumbersome if there were 100 cells to add up.

Use Excel's SUM function to total the values in a range of cells like this: SUM(A1:A100)

You can also use functions within functions. Consider the expression:

=ROUND(AVERAGE(A1:A100),1) This expression would first compute the average of all the values from cell A1

through A100 and then round that result to 1 digit to the right of the decimal point


Open the Insert Function dialog box To get help from Excel for inserting a

function, first click the cell in which you wish to insert the function. Then, open the Insert Function Dialog box:


Open the Insert Function dialog box Microsoft Excel 2007


Insert Function dialog box


Identify cell ranges A group of worksheet cells is known as a cell range,

or range. Working with ranges in a worksheet makes working with the data easier.

Ranges can be adjacent or nonadjacent. Select an adjacent range by L-clicking (Left-mouse button

clicking) on a cell and dragging to an opposite corner of a rectangle of cells

A nonadjacent range is comprised of two or more adjacent ranges that are not contiguous to each other To select a nonadjacent range, begin by selecting an

adjacent range, then press and hold down the Ctrl key as you select other adjacent ranges


Copy and paste formulas and functions Copying and pasting a cell or range of cells is a

simple, but highly effective means for quickly filling out a large worksheet.

To copy and paste a cell or range: Select the cell or range to be copied and then click the

Copy button on the standard toolbar or Ctl+c. Select the cell or range into which you want to copy the

selection and then click the Paste button on the standard toolbar or Ctl-v.

Once you are finished pasting, press the Esc key to deselect the selection


Copy and paste effects on cell references Copied formulas or functions that have cell

references are adjusted for the target cell or range of cells.

For example, if cell G5 contains the formula =F5*B5/B7, and you copy

and paste this formula to cell G6, the formula in cell G6 will be =F6*B6/B8.

This may or may not be correct for your worksheet, depending upon what you are trying to do.


Use relative references A relative reference is a cell reference that

shifts when you copy it to a new location on a worksheet.

A relative reference changes in relation to the change of location.

If you copy a formula to a cell three rows down and five columns to the right, a relative reference to cell B5 in the source cell would become G8 in the destination cell.


Use absolute references An absolute reference is a cell reference that

does not change when you copy the formula to a new location.

To create an absolute reference, you preface the column and row designations with a dollar sign ($).

For example, the absolute reference for B5 would be $B$5. This cell reference would stay the same no matter

where you copied the formula.


Use Excel's Auto Fill features When you need to copy and paste a large number

of rows or columns, you can use a technique called Auto Fill.

The fill handle is a small black square located in the lower-right corner of a selected cell or range.

When you drag the fill handle with a L-Click (Left-Click), Excel automatically fills in the

formulas and formats used in the selected cells. With a R-Click (Right-Click), Excel offers the menu for

several options for Auto Fill.


An example of Auto FillL-Click and drag

R-Click and drag


Any Questions?


Useful Tricks #1

Ctr+Shift+ Ctrl key plus the shift key and down-arrow key Select all cells up to next empty cell.

Ctr+~ Ctrl key plus the ~ (Tilda) key Toggle option that allows you to switch back and

forth between the value view and the formula view


Any Questions?

Documents

Lecture 2 Math 15 – Introduction to Scientific Data Analysis Introduction to spreadsheet February 4, 2008