So I'm not good with excel (computers in general) and can do some things but this one is out of my league.
This is the problem:
The cost of a used car is highly correlated with the following variables:
t= age of car 1 ≤ t ≤ 5 (years)
V= volume of engine 1000 ≤ V ≤ 2500 (cubic centimeters)
D= number of doors D= 2,3,4,5
A= accessories and style A= 1,2,3,4,5,6 (qualitative)
Using regression analysis, the following relationship between the cost and four independent variables was found:
purchase cost= (1+1/t)*V*(D/2+A)
Plot the purchase price of the car as a function of the four variables.
I know how to input the function into excel and only use one number from each variable:
Function:
=(1+(1/B2))*C2*((D2/2)+E2
Where: B2=1, C2=1000, D2=2, E2=1
Which: A1=4000 (for the purchase cost)
What I don't know is how to make the function use multiple number combinations within those variables (i.e. how to change one variable and not the others). I've looked up "youtube" videos and numerous websites to figure this out and none of them showed me what I needed to know. Any help would be greatly appreciated.
I think you have fundamentally solved your problem but there is a typo in your formula which is preventing it from calculating. Add a closing parenthesis at the end your formula. Then assuming that the formula is placed in cell A1 and your example values are placed in the cells indicated in your post, simply type a new numeric value in B2, C2, D2 and/or E2 'manually' and your formula result will update.
If you wish you can create a dropdown list in your cells to hold the list of values for each of your variables. This link should get you going.
Related
I am currently trying to check if a number in a comma-separated string is within a number interval. What I am trying to do is to check if an area code (from the comma-separated string) is within the interval of an area.
The data:
AREAS
Area interval
Name
Number of locations
1000-1499
Area 1
?
1500-1799
Area 2
?
1800-1999
Area 3
?
GEOLOCATIONS
Name
Areas List
Location A
1200, 1400
Location B
1020, 1720
Location C
1700, 1920
Location D
1940, 1950, 1730
The result I want here is the number of unique locations in the "Areas list" within the area interval. So Location D should only count ONCE in the 1800-1999 "area", and the Location A the same in the 1000-1499 location. But location B should count as one in both 1000-1499 and one in 1500-1799 (because a number from each interval is in the comma-separated string in "Areas list"):
Area interval
Name
Number of locations
1000-1499
Area 1
2
1500-1799
Area 2
3
1800-1999
Area 3
2
How is this possible?
I have tried with a COUNTIFS, but it doesnt seem to do the job.
Here is one option using FILTERXML():
Formula in C2:
=SUM(FILTERXML("<x><t>"&TEXTJOIN("</s></t><t>",,"1<s>"&SUBSTITUTE(B$7:B$10,", ","</s><s>"))&"</s></t></x>","//t[count(.//*[.>="&SUBSTITUTE(A2,"-","][.<=")&"])>0]"))
Where:
"<x><t>"&TEXTJOIN("</s></t><t>",,"1<s>"&SUBSTITUTE(B$7:B$10,", ","</s><s>"))&"</s></t></x>" - Is the part where we construct a valid piece of XML. The theory here is that we use three axes here. Each t-node will be named a literal 1 to make sure that once we return them with xpath we can sum the result. The outer x-nodes are there to make sure Excel will handle the inner axes correctly. If you are curious to know how this xml-syntax looks at the end, it's best to step through using the 'Evaluate Formula' function on the Data-tab;
//t[count(.//*[.>="&SUBSTITUTE(A2,"-","][.<=")&"])>0]")) - Basically means that we collect all t-nodes where the count of child s-nodes that are >= to the leftmost number and <= to the rightmost number is larger than zero. For A2 the xpath would look like //t[count(.//*[.>=1000][.<=1499])>0]")) after substitution. In short: //t - Select t-nodes, where count(.//* select all child-nodes where count of nodes that fullfill both requirements [.>=1000][.<=1499] is larger than zero;
Since all t-nodes equal the number 1, the SUM() of these t-nodes equals the amount of unique locations that have at least one area in its Areas List;
Important to note that FILTERXML() will result into an error if no t-nodes could be found. That would mean we need to wrap the FILTERXML() in an IFERROR(...., 0) to counter that and make the SUM() still work correctly.
Or, wrap the above in BYROW():
Formula in C2:
=BYROW(A2:A4,LAMBDA(a,SUM(FILTERXML("<x><t>"&TEXTJOIN("</s></t><t>",,"1<s>"&SUBSTITUTE(B$7:B$10,", ","</s><s>"))&"</s></t></x>","//t[count(.//*[.>="&SUBSTITUTE(a,"-","][.<=")&"])>0]"))))
Using MMULT and TEXTSPLIT:
=LET(rng,TEXTSPLIT(D2,"-"),
tarr,IFERROR(--TRIM(TEXTSPLIT(TEXTJOIN(";",,$B$2:$B$5),",",";")),0),
SUM(--(MMULT((tarr>=--TAKE(rng,,1))*(tarr<=--TAKE(rng,,-1)),SEQUENCE(COLUMNS(tarr),,1,0))>0)))
I am in very distinguished company but will add my version anyway as byrow probably is a slightly different approach
=LET(range,B$2:B$5,
lowerLimit,--#TEXTSPLIT(E2,"-"),
upperLimit,--INDEX(TEXTSPLIT(E2,"-"),2),
counts,BYROW(range,LAMBDA(r,SUM((--TEXTSPLIT(r,",")>=lowerLimit)*(--TEXTSPLIT(r,",")<=upperLimit)))),
SUM(--(counts>0))
)
Here the ugly way to do it, with A LOT of helper columns. But not so complicated 🙂
F4= =TRANSPOSE(FILTERXML("<m><r>"&SUBSTITUTE(B4;",";"</r><r>")&"</r></m>";"//r"))
F11= =TRANSPOSE(FILTERXML("<m><r>"&SUBSTITUTE(A11;"-";"</r><r>")&"</r></m>";"//r"))
F16= =SUM(F18:F21)
F18= =IF(SUM(($F4:$O4>=$F$11)*($F4:$O4<=$G$11))>0;1;"")
G18= =IF(SUM(($F4:$O4>=$F$12)*($F4:$O4<=$G$12))>0;1;"")
H18= =IF(SUM(($F4:$O4>=$F$13)*($F4:$O4<=$G$13))>0;1;"")
Given an NxM array of positive integers, how would one go about selecting integers so that the maximum sum of values is achieved where there is a maximum of x selections in each row and y selections in each column. This is an abstraction of a problem I am trying to face in making NCAA swimming lineups. Each swimmer has a time in every event that can be converted to an integer using the USA Swimming Power Points Calculator the higher the better. Once you convert those times, I want to assign no more than 3 swimmers per event, and no more than 3 races per swimmer such that the total sum of power scores is maximized. I think this is similar to the Weapon-targeting assignment problem but that problem allows a weapon type to attack the same target more than once (in my case allowing a single swimmer to race the same event twice) and that does not work for my use case. Does anybody know what this variation on the wta problem is called, and if so do you know of any solutions or resources I could look to?
Here is a mathematical model:
Data
Let a[i,j] be the data matrix
and
x: max number of selected cells in each row
y: max number of selected cells in each column
(Note: this is a bit unusual: we normally reserve the names x and y for variables. These conventions can help with readability).
Variables
δ[i,j] ∈ {0,1} are binary variables indicating if cell (i,j) is selected.
Optimization Model
max sum((i,j), a[i,j]*δ[i,j])
sum(j,δ[i,j]) ≤ x ∀i
sum(i,δ[i,j]) ≤ y ∀j
δ[i,j] ∈ {0,1}
This can be fed into any MIP solver.
I'm setting up a configuration excel sheet to be imported into a database.
It has four columns
Equipment Fleet Start Date End Date Highlight Me
=============================================
A X 1-Jan-20 5-Jan-20 X
A Y 6-Jan-20
B C 1-Jan-20 3-Jan-20
B D 4-Jan-20 10-Jan-20
A Z 3-Jan-20 X
A Z 5-Jan-20 X
I need to identify and highlight overlapping configs
I'd like lines 1, 5 and 6 to be highlighted.
They are all a configuration for the same Equipment, but their configuration dates overlap
Fleet is that attribute we are configuring for the date range but has no bearing on the validation
Constraints:
I'd like to use tables (not named ranges) for this. My table is called tblFleetConfig
Yes I could do this in VBA but I don't want to deal with trusted workbooks etc. etc.
So far I have pasted this into a column on the right
=
(tblFleetConfig[#[Start Date]] >= tblFleetConfig[Start Date])
*
(tblFleetConfig[#[Start Date]] <= tblFleetConfig[End Date])
*
(tblFleetConfig[#Equipment]=tblFleetConfig[Equipment])
The result I'm getting is a 1 for the first line and 0 for every other line.
Clearly I don't understand this syntax and I'm interested in learning.
You asked a complicated one, those blanks throw a wrench into it.
Your formula is the right syntax, you need to wrap it in a SUMPRODUCT() though.
=SUMPRODUCT((tblFleetConfig[End Date]<=tblFleetConfig[#[End Date]])*(tblFleetConfig[Start Date]>=tblFleetConfig[#[Start Date]])*(tblFleetConfig[Equipment]=tblFleetConfig[#Equipment]))
This is your formula wrapped it in a SUMPRODUCT().
This will return a 1 if there is a single occurrence and a number greater than 1 if multiple.
Let me know if it works.
I am writing a series of queries to my workbook's data model to retrieve the number of documents by Category_Name which are greater than a certain numbers of days old (e.g. >=650).
Currently this formula (entered in celll C3) returns the correct number for a single Days Old value (=3).
=CUBEVALUE("ThisWorkbookDataModel",
"[Measures].[Count of Docs]",
"[EDD_Report].[Category_Name].&["&$B2&"]",
"[EDD_Report_10-01-18].[Days Old].[34]")
How do I return the number of documents for Days Old values >=650?
The worksheet looks like:
A B C
1 Date PL Count of Docs
2 10/1/2018 ALD 3
3 ...
UPDATE: As suggested in #ama 's answer below, the expression in step B did not work.
However, I created a subset of the Days Old values using
=CUBESET("ThisWorkbookDataModel",
"{[EDD_Report_10-01-18].[Days Old].[all].[650]:[EDD_Report_10-01-18].[Days Old].[All].[3647]}")
The cell containing this cubeset is referenced as the third Member_expression of the original CUBEVALUE formula. The limitation is now that the values for the beginning and end must be members of the Days Old set.
This is limiting, in that, I was hoping for a more general test for >=650 and there is no way to guarantee that specific values of Days Old will be in the query.
First time I hear about CUBE, so you got me curious and I did some digging. Definitely not an expert, but here is what I found:
MDX language should allow you to provide value ranges in the form of {[Table].[Field].[All].[LowerBound]:[Table].[Field].[All].[UpperBound]}.
A. Get the total number of entries:
D3 =CUBEVALUE("ThisWorkbookDataModel",
"[Measures].[Count of Docs]",
"[EDD_Report].[Category_Name].&["&$B2&"]"),
"{[EDD_Report_10-01-18].[Days Old].[All]")
B. Get the number of entries less than 650:
E3 =CUBEVALUE("ThisWorkbookDataModel",
"[Measures].[Count of Docs]",
"[EDD_Report].[Category_Name].&["&$B2&"]"),
"{[EDD_Report_10-01-18].[Days Old].[All].[0]:[EDD_Report_10-01-18].[Days Old].[All].[649]}")
Note I found something about using .[All].[650].lag(1)} but I think for it to work properly your data might need to be sorted?
C. Substract
C3 =D3-E3
Alternatively, go for the quick and dirty:
=CUBEVALUE("ThisWorkbookDataModel",
"[Measures].[Count of Docs]",
"[EDD_Report].[Category_Name].&["&$B2&"]"),
"{[EDD_Report_10-01-18].[Days Old].[All].[650]:[EDD_Report_10-01-18].[Days Old].[All].[99999]}")
Hope this helps and do let me know, I am still curious!
I have 3 columns with the following name:
name1, name2 and value.
I want to obtain in another sheet two tables having two compulsory condition (min and max calculated using name1 and name2):
the name of the first table to be taken from the column with name2 and this table has two partition.
the first partition named max, is calculating the max for 30_-20, 40_-20, 50_-20, 30_22, 40_22, 50_22, 30_60, 40_60, 50_60 and second partition named min, is calculating the min for 30_-20, 40_-20, 50_-20, 30_22, 40_22, 50_22, 30_60, 40_60, 50_60.
What I want to say can be viewed in the following picture.
I need this for my job, and I don't know anything about macros. I think it will be necessary to learn macros.
Given a layout on a single worksheet similar to your sample image.
The standard formula(s) for G3, I3, M3 and O3 are:
=MAX(INDEX($C$2:$C$999*($A$2:$A$999=H3)*($B$2:$B$999=H$1), , ))
=MIN(INDEX($C$2:$C$999+(($A$2:$A$999<>H3)+($B$2:$B$999<>H$1))*1E+99, , ))
=MAX(INDEX($C$2:$C$999*($A$2:$A$999=N3)*($B$2:$B$999=N$1), , ))
=MIN(INDEX($C$2:$C$999+(($A$2:$A$999<>N3)+($B$2:$B$999<>N$1))*1E+99, , ))
Fill down as necessary. It is usually easier to reference a cell containing a value (e.g. 30_-20) than repeatedly hardcoding the value into a variety of similar formulas. I've used H3:H5 and N3:N5 for the column A values.
How it Works:
See MINIF, MAXIF and MODEIF with Standard Formulas.