© 2011 reach all rights reserved.fall 2011. mathematical functions round sumif statistical...

CIS300 Test Review

CIS300 Test 2

•Mathematical Functions• ROUND• SUMIF

• Statistical Functions• AVERAGEIF• COUNTIF• LARGE• SMALL

•Lookup Functions• HLOOKUP• LOOKUP• VLOOKUP

•Information Functions• ISERROR• ISNA• ISREF

Microsoft Excel

Mathematical Functions

ROUND=ROUND(number,num_digits)

SUMIF=SUMIF(range,criteria,[sum_range])

The ROUND function

Microsoft® Excel® Mathematical Functions

Syntax:

=ROUND(number, num_digits)

Arguments:•number Required

The number that you want to round.•num_digits Required

The number of digits to which you want to round the number argument.

The ROUND function

Description:• Rounds a number to a specified number of digits.

Remarks:• If num_digits is greater than 0 (zero), then number is rounded to

the specified number of decimal places.• If num_digits is 0, the number is rounded to the nearest integer. • If num_digits is less than 0, the number is rounded to the left of

the decimal point.

Errors:None

The ROUND function

=ROUND(-1.475,2) Rounds -1.475 to two decimal places

Textbook Question

To a great extent, the operating system determines which applications a computer can run.

A) TRUEB) FALSE

Textbook Question

To a great extent, the operating system determines which applications a computer can run.

A) TRUE B) FALSE

Ref: p.61

The SUMIF function

Syntax:

=SUMIF(range, criteria, [sum_range])

Arguments:•range Required

The range of cells that you want evaluated by criteria.o Cells in each range must be numbers or names, arrays, or references that

contain numbers.o Blank and text values are ignored.

criteria Required The criteria in the form of a number, expression, a cell reference, text, or a

function that defines which cells will be added.o Criteria can be expressed as 32, ">32", B5, "32", "apples", or TODAY().

•sum_range Optional The actual cells to add, if you want to add cells other than those specified in the

range argument.o Excel adds the cells that are specified in the range argument (the same cells

to which the criteria is applied).

The SUMIF function

Description:• Sums the values in a range that meet criteria that you specify.

Remarks:• See the Microsoft® Excel® help for additional remarks.

Errors:None

The SUMIF function

Textbook Question

Adding to a product or service to increase its value to the consumer is called ____.

A) adding valueB) enhancing existing products or

servicesC) increasing valueD) incrementing service

Textbook Question

Adding to a product or service to increase its value to the consumer is called ____.

A) adding valueB) enhancing existing products or

services C) increasing valueD) incrementing service

Ref. pp. 49-50

Microsoft Excel

Statistical Functions

AVERAGEIF=AVERAGEIF(range,criteria,[average_range])

COUNTIF=COUNTIF(range, criteria)

LARGE=LARGE(array,k)

SMALL=SMALL(array,k)

The AVERAGEIF function

Microsoft® Excel® Statistical Functions

Syntax:

=AVERAGEIF(range, criteria, [average_range])

One or more cells to average, including numbers or names, arrays, or references that contain numbers.

•criteria Required The criteria in the form of a number, expression, cell reference, or

text that defines which cells are averaged.•average_range Optional

The actual set of cells to average.

Description:• Returns the average (arithmetic mean) of all the cells in a range

that meet a given criteria.

Remarks:• If average_range is omitted, range is used.• Cells in range that contain TRUE or FALSE are ignored.• If a cell in average_range is an empty cell, AVERAGEIF ignores it.• If a cell in criteria is empty, AVERAGEIF treats it as a 0 value.

Errors:#DIV/0 – If range is a blank or text value.

#DIV/0 – If no cells in the range meet the criteria.

=AVERAGEIF(B2:B5,"<23000")

=AVERAGEIF(B2:B5,"<23000")=14000

=AVERAGEIF(A2:A5,"<95000")

=AVERAGEIF(A2:A5,"<95000")=#DIV/0

=AVERAGEIF(A2:A5,">250000",B2:B5)

=AVERAGEIF(A2:A5,">250000",B2:B5)=24500

The COUNTIF function

Syntax:

=COUNTIF(range, criteria)

One or more cells to count, including numbers or names, arrays, or references that contain numbers.o Blank and text values are ignored.

criteria Required A number, expression, cell reference, or text string that defines

which cells will be counted.o Criteria can be expressed as 32, ">32", B4, "apples", or "32".

Description:• Counts the number of cells within a range that meet a single

criterion that you specify.

Remarks:• See the Microsoft® Excel® help for additional remarks.• Criteria are case insensitive

Errors:None

Textbook Question

Implementation of a(n) ____ requires a business to revamp processes—to undergo organizational change—to gain an advantage.

A) BIB) CRMC) GISD) SIS

Textbook Question

Implementation of a(n) ____ requires a business to revamp processes—to undergo organizational change—to gain an advantage.

A) BIB) CRMC) GIS

D)SIS Ref: p. 56

Creating and Maintaining Strategic Information Systems

Many opportunities to accomplish competitive edge with information technology

Innovative software can establish a competitive advantage

Strategic information systems can be created from scratch or by modifying a previous system

To be an SIS, an information system must: Serve an organization goal Collaborate with other functional units of company

Management Information Systems, Sixth Edition 28

The LARGE function

Syntax:

=LARGE(array,k)

Arguments:•array Required

The array or range of data for which you want to determine the k-th largest value.

k Required The position (from the largest) in the array or cell range of data

to return.

The LARGE function

Description:• Returns the k-th largest value in a data set.

Remarks:• If n is the number of data points in a range, then LARGE(array,1) returns

the largest value.• If n is the number of data points in a range, then LARGE(array,n) returns

the smallest value.

Errors:#NUM! – If array is empty#NUM! – If k ≤ 0#NUM! – If k is greater than the number of data points

=LARGE(array,k)

3rd largest number in the numbers in columns A and B

=LARGE(array,k)=LARGE(A2:B6

=LARGE(array,k)=LARGE(A2:B6,3)

List the numbers in descending order:

7655444332

=LARGE(array,k)

7th largest number in the numbers in columns A and B

=LARGE(array,k)=LARGE(A2:B6

7655444332

Textbook Question

A company achieves ____________________ by using strategy to maximize its strengths, resulting in a competitive advantage.

Textbook Question

A company achieves strategic advantage by using strategy to maximize its strengths, resulting in a competitive advantage.

Ref. p. 42

The SMALL function

Syntax:

=SMALL(array,k)

Arguments:•array Required

The array or range of data for which you want to determine the k-th smallest value.

k Required The position (from the smallest) in the array or cell range of data

to return.

The SMALL function

Description:• Returns the k-th smallest value in a data set.

Remarks:• If n is the number of data points in a range, then SMALL(array,1) returns

the smallest value.• If n is the number of data points in a range, then SMALL(array,n) returns

the largest value.

Errors:#NUM! – If array is empty#NUM! – If k ≤ 0#NUM! – If k is greater than the number of data points

=SMALL(array,k)

4th smallest number in first column

=SMALL(array,k)=SMALL(A2:A10

=SMALL(array,k)=SMALL(A2:A10,4)

List the numbers in ascending order:

233444567

=SMALL(array,k)=SMALL(A2:A10,4)

233444567

=SMALL(array,k)

2nd smallest number in second column

=SMALL(array,k)=SMALL(B2:B10

=SMALL(array,k)=SMALL(B2:B10,2)

134788

122354

=SMALL(array,k)=SMALL(B2:B10,2)

134788

122354

Textbook Question

When the process of marketing products is complete, the next link in the supply chain is shipping.

A) TRUEB) FALSE

Textbook Question

When the process of marketing products is complete, the next link in the supply chain is shipping.

A) TRUE

B) FALSE

Supply Chain Management

Supply chain: consists of procurement of raw materials, processing materials into goods, and delivering goods

Processing raw materials into goods is also known as manufacturing

Supply chain management: monitoring, controlling, and facilitating supply chains

CAD systems often transfer data automatically to CAM systems

Management Information Systems, Sixth Edition 54

The VLOOKUP function

Microsoft® Excel® Lookup Functions

Syntax:=VLOOKUP(lookup_value,table_array,col_index_num,[range_lookup])

Arguments:•lookup_value Required

The value to search in the first column of the table or range.•table_array Required

The range of cells that contains the data. •col_index_num Required

The column number in the table_array argument from which the matching value must be returned.

•range_lookup Optional A logical value that specifies whether you want VLOOKUP to find

an exact match or an approximate match.

Description:• Searches the first column of a range of cells, and then returns a

value from any cell on the same row of the range.

Remarks:• The values in the first column of table_array can be text, numbers, or logical values.

•Uppercase and lowercase text are equivalent.

• If range_lookup is TRUE, the values in the first column of table_array must be placed in ascending order.

• If range_lookup is TRUE or omitted, an approximate match is returned.

• If range_lookup is FALSE, an exact match will be attempted.

Errors:#VALUE! – If col_index_num is less than 1

#REF! – If col_index_num is greater than the number of columns in the table_array

#N/A – If range_lookup is FALSE and an exact match cannot be found

#N/A – If lookup_value is less than the smallest value in the first column of table_array

(1) =VLOOKUP(C11*2, $B$8:$G$24, G18/E6, TRUE)

(2) =VLOOKUP(IF(MIN(B6:F18)<>MAX(D3:G5), 38, 83), E11:G22,3)

(3) =VLOOKUP(MAX(B3:G4)*B6/G3, $C$8:$F$20, 3, FALSE)

(4) =VLOOKUP(C3*E3, C8:F20, IF(SUM(B3:B24)>SUM(F3:F24), 2, 4))

(5) =VLOOKUP(LARGE(D10:G17,4), $C$8:$F$20, 5, FALSE)

=VLOOKUP(44*2, $B$8:$G$24, G18/E6, TRUE)

=VLOOKUP(88, $B$8:$G$24, G18/E6, TRUE)

=VLOOKUP(88, $B$8:$G$24, 66/E6, TRUE)

=VLOOKUP(88, $B$8:$G$24, 66/11, TRUE)

=VLOOKUP(88, $B$8:$G$24, 66/E6, TRUE)

=VLOOKUP(88, $B$8:$G$24, 66/11, TRUE)

=VLOOKUP(88, $B$8:$G$24, 6, TRUE)

=VLOOKUP(IF(11<>MAX(D3:G5), 38, 83), E11:G22,3)

=VLOOKUP(IF(11<>11, 38, 83), E11:G22,3)

=VLOOKUP(IF(11<>11), 38, 83), E11:G22,3)

=VLOOKUP(IF(FALSE, 38, 83), E11:G22,3)

=VLOOKUP(IF(11<>11), 38, 83), E11:G22,3)

=VLOOKUP(83, E11:G22,3)

=VLOOKUP(IF(11<>11), 38, 83), E11:G22,3)

=VLOOKUP(83, E11:G22,3)

=VLOOKUP(17*B6/G3, $C$8:$F$20, 3, FALSE)

=VLOOKUP(17*18/G3, $C$8:$F$20, 3, FALSE)

=VLOOKUP(306/G3, $C$8:$F$20, 3, FALSE)

=VLOOKUP(306/6, $C$8:$F$20, 3, FALSE)

=VLOOKUP(51, $C$8:$F$20, 3, FALSE)

=VLOOKUP(306/6, $C$8:$F$20, 3, FALSE)

=VLOOKUP(11*E3, C8:F20, IF(SUM(B3:B24)>SUM(F3:F24), 2, 4))

=VLOOKUP(11*5, C8:F20, IF(SUM(B3:B24)>SUM(F3:F24), 2, 4))

=VLOOKUP(55, C8:F20, IF(1000>SUM(F3:F24), 2, 4))

=VLOOKUP(55, C8:F20, IF(1000>924, 2, 4))

=VLOOKUP(55, C8:F20, IF(TRUE, 2, 4))

=VLOOKUP(55, C8:F20, 2)

The HLOOKUP function

Syntax:= HLOOKUP(lookup_value,table_array,row_index_num,range_lookup)

The value to search in the first row of the table or range.•table_array Required

The range of cells that contains the data. •row_index_num Required

The row number in table_array from which the matching value will be returned

range_lookup Optional A logical value that specifies whether you want HLOOKUP to find

an exact match or an approximate match.

Description:• Searches for a value in the top row of a table or an array of

values, and then returns a value in the same column from a row you specify in the table or array.

Remarks:• If HLOOKUP can't find lookup_value, and range_lookup is TRUE, it uses the largest value that is less than lookup_value.

• If lookup_value is smaller than the smallest value in the first row of table_array, HLOOKUP returns the #N/A error value.

Errors:#VALUE! – If row_index_num is less than 1

#REF! – If row_index_num is greater than the number of rows in the table_array

#N/A – If range_lookup is FALSE and an exact match cannot be found

#N/A – If lookup_value is less than the smallest value in the first row of table_array

The HLOOKUP function A B C1 Axles Bearings Bolts2 4 4 93 5 7 104 6 8 11

FormulaDescription (Result)Looks up Axles in row 1, and returns the value from row 2 that's in the same column. (4)

=HLOOKUP("Axles",A1:C4,2,TRUE)

=HLOOKUP("Bearings",A1:C4,3,FALSE)

Looks up Bearings in row 1, and returns the value from row 3 that's in the same column. (7)

=HLOOKUP("B",A1:C4,3,TRUE)

Looks up B in row 1, and returns the value from row 3 that's in the same column. Because B is not an exact match, the next largest value that is less than B is used: Axles. (5)

=HLOOKUP("Bolts",A1:C4,4) Looks up Bolts in row 1, and returns the value from row 4 that's in the same column. (11)

The LOOKUP function

The Lookup function has two forms:

If you want to Then see Usage

Look in a one-row or one-column range (known as a vector) for a value and return a value from the same position in a second one-row or one-column range

Vector form

Use the vector form when you have a large list of values to look up or when the values may change over time.

Look in the first row or column of an array for the specified value and return a value from the same position in the last row or column of the array

Array form

Use the array form when you have a small list of values and the values remain constant over time.

The LOOKUP function – Vector Form

Syntax:=LOOKUP(lookup_value, lookup_vector, result_vector)

Value that LOOKUP searches for in the first vector. Can be a number, text, a logical value, or a name or reference

that refers to a value.•lookup_vector Required

A range that contains only one row or one column. The values can be text, numbers, or logical values.

result_vector Required A range that contains only one row or column. Must be the same size as lookup_vector.

The LOOKUP function – Vector Form

Remarks:•If the LOOKUP function can't find the lookup_value, the function matches the largest value in lookup_vector that is less than or equal to lookup_value. •If lookup_value is smaller than the smallest value in lookup_vector, LOOKUP returns the #N/A error value.

The LOOKUP function – Array Form

Syntax:

= LOOKUP(lookup_value, array)

Arguments:• lookup_value Required

Value that LOOKUP searches for in an array. Can be a number, text, a logical value, or a name or reference

that refers to a value.• array Required

A range of cells that contains text, numbers, or logical values that you want to compare with lookup_value.

The LOOKUP function – Array Form

Remarks:• If LOOKUP can't find the value of lookup_value, it uses the

largest value in the array that is less than or equal to lookup_value.

• If the value of lookup_value is smaller than the smallest value in the first row or column (depending on the array dimensions), LOOKUP returns the #N/A error value.

• If array covers an area that is wider than it is tall (more columns than rows), LOOKUP searches for the value of lookup_value in the first row.

• If an array is square or is taller than it is wide (more rows than columns), LOOKUP searches in the first column.

• With the HLOOKUP and VLOOKUP functions, you can index down or across, but LOOKUP always selects the last value in the row or column.

The LOOKUP function A B

1 Frequency Color

2 4.14 red

3 4.19 orange

4 5.17 yellow

5 5.77 green

6 6.39 blue

Formula Description Result=LOOKUP(4.19,A2:A6,B2:B6)

Looks up 4.19 in column A, and returns the value from column B that is in the same row.

orange

=LOOKUP(5.00,A2:A6,B2:B6)

Looks up 5.00 in column A, matches the next smallest value (4.19), and returns the value from column B that is in the same row.

orange

=LOOKUP(7.66,A2:A6,B2:B6)

Looks up 7.66 in column A, matches the next smallest value (6.39), and returns the value from column B that is in the same row.

=LOOKUP(0,A2:A6,B2:B6)Looks up 0 in column A, and returns an error because 0 is less than the smallest value in the lookup_vector A2:A7.

Quiz Question

LOOKUP is very similar to VLOOKUP and HLOOKUP. The difference is that HLOOKUP searches for the lookup_value in the first row, VLOOKUP searches in the first column, and LOOKUP searches according to the dimensions of an array.

A. TRUEB. FALSE

Quiz Question

LOOKUP is very similar to VLOOKUP and HLOOKUP. The difference is that HLOOKUP searches for the lookup_value in the first row, VLOOKUP searches in the first column, and LOOKUP searches according to the dimensions of an array.

A. TRUEB. FALSE

Textbook Question

____, used to accumulate data about costs involved in producing specific products, make excellent use of IT to compile pricing data.

A) ERP SystemsB) Cost-accounting SystemsC) Human Resources SystemsD) SCM Systems

Textbook Question

____, used to accumulate data about costs involved in producing specific products, make excellent use of IT to compile pricing data.

A) ERP Systems

B) Cost-accounting Systems C) Human Resources SystemsD) SCM Systems

Ref: p.81

Textbook Question

When a pattern of defects is discovered in a product, ____________________ helps pinpoint the plant at which it was produced and the particular lot from which it came.

Textbook Question

When a pattern of defects is discovered in a product, ______R F I D_______ helps pinpoint the plant at which it was produced and the particular lot from which it came.

Ref: p.91

Microsoft Excel

Information Functions

ISNA=ISNA(value)

ISERROR=ISERROR(value)

ISREF=ISREF(value)

The ISNA function

Microsoft® Excel® Information Functions

Syntax:

=ISNA(value)

Arguments:•value Required

The value that you want tested

The ISNA function

Description:• Returns TRUE if value refers to the #N/A (value not available)

error value.

Remarks:• The value arguments of the IS functions are not converted•Any numeric values that are enclosed in double quotation marks are treated as text.•The IS functions are useful in formulas for testing the outcome of a calculation

Errors:None

The ISNA function

The ISERROR function

Syntax:

=ISERROR(value)

The ISERROR function

Description:• Returns TRUE if value refers to any error value:

• #N/A #VALUE! #REF! #DIV/0!

• #NUM! #NAME? #NULL!

Errors:None

The ISREF function

Syntax:

=ISREF(value)

The ISREF function

Description:• Returns TRUE if the value is a reference

Errors:None

The ISREF function

FORMULA DESCRIPTION RESULT

=ISREF(XYZ1) Checks if XYZ1 is a valid reference

ISREF(C1) Checks if C1 is a valid reference

Databases & Data WarehousesExtra Material

Database Approach

Entity – any object about which an organization chooses to collect data. Ex. Types of people: employees, students, contractors, etc.

Character – the smallest piece of dataField – one piece of information about an entity Ex.

First Name or Last Name. Multiple characters make up a field

Record – the fields related to the same entity make up a record

File – A collection of related records Ex. All the records of a colleges’ students

Database – a collection of one or more filesRef. p 235

Textbook Question

There are two overall approaches to maintaining data: the traditional file approach—which has no mechanism for tagging, retrieving, and manipulating data—and the ____, which does have this mechanism.

A) Database ApproachB) Data ApproachC) Datafile ApproachD) Indexed file approach

Textbook Question

There are two overall approaches to maintaining data: the traditional file approach—which has no mechanism for tagging, retrieving, and manipulating data—and the ____, which does have this mechanism.

A) Database ApproachB) Data ApproachC) Datafile ApproachD) Indexed file approach Ref. p.

Textbook Question

A collection of related records, such as all the records of a college’s students, is called a(n)

A) FieldB) CharacterC) ItemD) File

Textbook Question

A collection of related records, such as all the records of a college’s students, is called a(n)

A) FieldB) CharacterC) ItemD)File

Ref p. 235

Textbook Question

A ____ is the general logical structure in which records are stored within a database and the method used to establish relationships among the records.

A) database relationshipB) database modelC) database listD) database catalog

Textbook Question

A ____ is the general logical structure in which records are stored within a database and the method used to establish relationships among the records.

A) database relationshipB) database modelC) database listD) database catalog

Ref p. 238

Textbook Question

While a database itself is a collection of several related files, the program used to build databases, populate them with data, and manipulate the data is called a(n) ____________________.

Textbook Question

While a database itself is a collection of several related files, the program used to build databases, populate them with data, and manipulate the data is called a(n) DBMS – Database Management System.

Ref. p 236

Textbook Question

Because of capacity needs, organizations often choose ____ to store and manage data warehouses.

A) midrange serversB) high speed networksC) mainframe computers with multiple

CPUsD) workstations

Textbook Question

Because of capacity needs, organizations often choose ____ to store and manage data warehouses.

A) midrange serversB) high speed networksC) mainframe computers with

multiple CPUsD) Workstations

Ref. p 250

Textbook Question

Multiple characters make up a record.

A. TRUEB. FALSE

Textbook Question

Multiple characters make up a record.

A. TRUEB. FALSE

Ref. p 235

PRACTICE

(Excel) You are creating a new forecast for your company's Marketing group and have entered the sales for 2005 into cell B4 of a spreadsheet. The expected rate of increase is in cell C2. What formula would you enter in cell C4 to compute the sales for 2006, given that you will copy that formula to cells D4:E4 to calculate the forecast for 2007 and 2008?

A. =B$4+B$4*C$2B. =$B$4+$B$4*C2 C. =$B4+$B4*$C2D. =B4*(1+$C$2)E. =B4+B4*C2

PRACTICE

© 2011 reach all rights reserved.fall 2011. mathematical functions round sumif statistical...

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