sundara ram matta [email protected] jan 28 th, 2014 - sundara ram matta...
TRANSCRIPT
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.
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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.
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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 215 - 220 questions.• Of course you can gain extra bonus when you answer
more than 190 questions.• Works best in ‘Google Chrome’.
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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
http://cs101.wvu.edu/resources/help/open-lab-online/
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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.
https://cs101.wvu.edu/tools/submit-assignments/’
• 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.
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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
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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
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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
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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.
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)