Sundara Ram Matta Jan 28 th, Sundara Ram Matta Jan 28 th,

IMPORTANT ANNOUNCEMENTS !!! Homework #1 has been posted and due by 2/6/2015. Homework #2 will be also posted by Friday. All the MyITLab/ HW’s are due by 11:59 pm on the due date specified. 2

ATTENDANCE Register your attendance only after 09:25 AM Section 3 and 10:25 AM Section 5. As few students have recorded their afternoon before 09:25 AM/ 10:25 AM and it will display in my records as ‘Wrong Time’. Even if you arrive early, look at the TIME in the computer and login after 09:25 AM/ 10:25 AM. 3

MYITLAB PRE and POST TEST. Credit is only for the POST TEST. POST TEST – It is good if you have completed 100%. But even with 95% completion, that is one question being unanswered, it should be good. You must complete at least 190 questions during semester out of available questions. Of course you can gain extra bonus when you answer more than 190 questions. Works best in ‘Google Chrome’. 4

OPEN LAB 219 Armstrong Hall Monday 03:30 pm to 09:30 pm Tue/ Wed/ Thu: 03:30 pm to 05:30 pm Fri: 10:00 am to 06:00 pm G06 Lyon Tower (ERC – Towers) Wed: 07:30 pm to 09:30 pm Open Lab online chat Sun/ Tue/ Thu: 06:30 pm to 09:30 pm 5

IN-CLASS PROJECT Everyone should submit their files after completion, even if working in a group. Submit your files, select the correct name for the submission. Homework #1, Participation Project, Exams. Submission should be done from the computers in the class and before ending of the class. Remember out of 12, you must complete ‘10’ in-class projects. 6

TILL NOW… Cell and Cell addresses Formulas (start with = sign) Cell references – Relative B2 – Absolute $B$2 (When we require to make a value constant) – Mixed Row mixed reference B$2 Column mixed reference $B2 Workbook/ Formatting/ Print Options/ Importing Data 7

FUNCTIONS

FUNCTION BASICS Function – In excel it is a predefined computation that simplifies creating a formula. Ex: SUM instead of entering =B1 + B2 + B3 +…. Excel contains more than 400 functions which are organized into different categories.  Date and Time  Financial  Logical  Lookup & Reference  Math & Trig  Statistical 9

FUNCTION BASICS Usually the function name describes the purpose. Ex: SUM function – Adds up the values. AVERAGE function – To calculate the average Syntax – Starts with an equal = sign A function requires arguments which are the values, cell addresses. Two ways of inserting functions in excel 10

INSERTING A FUNCTION

BASIC MATH AND STAT FUNCTIONS SUM - Total amount spent on dining out AVERAGE - Average amount spent on iTunes to downloading music MIN - Lowest time to run a mile this week MAX - Highest electric bill in a year COUNT - # of people attend an event MEDIAN - Same as average

SUM FUNCTION Totals the values and displays the result in the cell where we entered the function. More efficient when we add values in three or more cells =SUM (A2:A14) (No need of space after equal sign)

AVERAGE AND MEDIAN FUNCTION Calculates the central tendency i.e., values tend to cluster around a central values. The AVERAGE function calculates the arithmetic mean or the average for the range of cells. =AVERAGE (A2:A14) (No need of space after equal sign) The MEDIAN function finds the mid-point value and more reflective of the data set. =MEDIAN (A2:A14)

MIN AND MAX FUNCTION Identifies the Low and High Values. Manually inspecting a sheet is inefficient especially if data is large. =MIN (A2:A14) =MAX(A2:A14)

COUNT FUNCTION Identify the Total Number with COUNT. We have three variations: – COUNT – excludes blank or N/A cells – COUNTBLANK – counts blank cells – COUNTA – excludes only blank cells.

BASIC MATH AND STAT FUNCTIONS

DATE FUNCTIONS Today Now Date Day Edate Eomonth Month Year

DATE FUNCTIONS The TODAY function displays the current date. Excel automatically updates it when you open it. Doesn’t require arguments, but you need to enter as =TODAY() The NOW function used the computer’s clock to display the date and time. =NOW() Omitting the parenthesis creates a #NAME? error.

LOGICAL FUNCTIONS A lot of work in Excel involves comparing data in different cells. Logical functions test the Logic of situation and return a particular result. A ???B

LOGICAL FUNCTIONS Is value A equal to value B (A=B) Is A greater than B (A>B) Is A less than B (A<B) Is A greater than or equal to B (A>=B) Is A less than or equal to B (A<=B) Is A not equal to B (A<>B) These are called Logical or Boolean operators because there can only be two possible answers in any given case - TRUE or FALSE.

LOGICAL ‘IF’ FUNCTIONS Most common logical function is the IF function. The function returns one value when a condition is met (TRUE) or returns another value when condition is not met (FALSE). =IF(Logical_Test, Value 1, Value 2)

LOGICAL ‘IF’ FUNCTIONS

NEXT CLASS More functions VLOOK UP, PMT etc. Range names