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Excel chapter-2. Upcoming Deadlines MyITLab Lesson 1 is due today (11:59 pm) Homework #1 is due on September 12. Function basics. Function basics. Function - predefined formula that performs a calculation.
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Upcoming Deadlines • MyITLab Lesson 1 is due today (11:59 pm) • Homework #1 is due on September 12
Function basics • Function - predefined formula that performs a calculation. • Syntax - set of rules that govern the structure and components for properly entering a function. • Argument - input, such as a cell or range. • Function begins with the equal sign (=) followed by the function name and arguments in parentheses • E.g. =SUM(A1:A3)
Inserting a function • Formula AutoComplete displays a list of functions and defined names as you enter a function. Function ScreenTip gives you syntax • Use the Insert Function dialog box to search for a function or select one from a list. The Function Arguments dialog box offers help on each argument
Sum function • The SUM function returns the mathematical sum of some number of cells or ranges; • for example: =SUM(A1:A3) =SUM(A1,B3,C5) =SUM(A1:B3,C5:E8)
Basic Statistical Functions • Common statistical functions include: • AVERAGE arithmetic mean • MEDIAN midpoint value • MIN minimum value • MAX maximum value • COUNT number of values in range • COUNTA number of nonempty cells • COUNTBLANK number of empty cells
Date/time functions E.g. Serial number = 5/17/2006
Logical functions • IF function, syntax: • IF(logical_test/condition, value_if_true, value_if_false) • Logical operators
Functions as Arguments • A nested function occurs when one function is embedded as an argument to another function; for example: =IF(A1<A2,MIN(B1:B5),MAX(B1:B5)) • Compute the MIN function if A1 is less than A2 • Compute the MAX function if A1 is not less than A2
Lookup Functions • Lookup functions are used to look up values in a table to perform calculations or display results • For example, a teacher may want to look up an average in order to assign a grade
Lookuptable is a range that contains data for the basis of the lookup and data to be retrieved. • Breakpoint is the lowest value for a specific category or series in a lookup table. • VLOOKUP AND HLOOKUP
Syntax =VLOOKUP(lookup value , lookup table , column index number ) • The lookup value ─ value to look up in a reference table • The lookup table ─ a range of cells containing the lookup table • The column index number ─ the column number in the lookup table that contains return values
HLOOKUP Function • The HLOOKUP function is used when the breakpoints and return data are placed in rows • The third argument now lists the row index
Pmt function • Calculates payments for a loan with a fixed amount with a fixed periodic rate for a fixed time period. • Syntax : PMT(rate, nper, pv, [fv],[type]) • Rate- periodic interest rate • Nper- total number of payments periods • Pv- present value of the loan / principal. • Fv- future value of loan / cash balance you want to attain after the last payment is made. • Type- when payments are due.
Rank Function RANK(number,ref,[order]) • Returns the rank of a number in a list of numbers. • Syntax : • The RANK function syntax has the following arguments: • Number Required. The number whose rank you want to find. • Ref Required. An array of, or a reference to, a list of numbers. Nonnumeric values in ref are ignored. • Order Optional. A number specifying how to rank number. • If order is 0 (zero) or omitted, Microsoft Excel ranks number as if ref were a list sorted in descending order. • If order is any nonzero value, Microsoft Excel ranks number as if ref were a list sorted in ascending order.
Displaying Cell Formulas • Press the Ctrl key plus the tilde (~) key to display formulas in a worksheet