Slopes/rates On A Non-linear Curve

So I've got some data, which has the approximate form of a sine function. I want to find all the x-axis intercepts. I tried using the intercept function and swapping around the y values for the x values, but it only returns 1 value (so I'd guess it uses a linear regression to estimate a single line through the axis).

I was thinking of trying a nested if/and statement but I haven't quite figured out how to do it. Basically I want to identify the two values where it switches from positive to negative and also indentify the values where it goes negative to positive, I can then fit a straight line between them to find a better approximation of the intercept (though it might not be necessary). Preferably I'd like it all one function as I'm not doing it in VBA (I might do later though, we'll see).

Can anyone suggest how I'd find these value or the x-intercept. Any help would be greatly appreciated.

I am trying to calculate time based off a non-conventional quarter hour time system

example;
8:00 to 8:07 = 8.0 hrs
8:08 to 8:23 = 8.25 hrs
8:24 to 8:38 = 8.5 hrs
8:39 to 8:53 = 8.75 hrs
8:53 to 8:59 = 9.0 hrs

I am having trouble writing an equation that would sum the clock-in and clock-out times (2 per day) and display the total time in these quarter hours and adding an additional hour if it is >= to *:53. Any help would be great.

How would I create a system where an excel file is updated in real time with new values? I have a program which logs data, and I want to have excel open, plotting the data in real time. Is this possible?

Ran into a problem I've never seen before. When dragging a cell across that contains a sum equation the result was the following cells with the same value. Inside the cell it showed what would be the correct new equation, but the value was still from the original cell. Any ideas on what's causing this?

If I double click the cell and then hit enter it will re-total the area and then give me the correct value, but I'd obviously rather is just work right the first time.

I am attempting to figure out how to change the formula to automatically subtract a 30 minute lunch if the total time for the day exceeds 6 hours worked.

B value Time of day punch in: 9:30 AM
C value =IF(D11="","","-")
D value Time of Day punch out: 6:00 PM
E value =IF(D11="","",IF(D11

I have a sheet with a list of names on and I've noticed that when I use ctrl+F to use the find function, even when I know i have entered the correct name it still will not work. I have identifed times when I know the name is there on the sheet, but the find function says "Excel cannot find the data you are searching for"

Im unable to put any pics up as my work pc has java disable so photobucket ect won't work but has anyone else come across this problem and how did you rectify it? A search macro perhaps?

In Excel I have been trying to find an easier way to calculate a time
difference where the times cross midnight. Example:
Start time: 23:50:00
End time: 00:15:00

How would you formulate an equation to determine the duration of time or
differnce between the start and end time?

Hey everyone,

I'm really hoping someone can help me with this...

I need to plot percentages over time in a line graph in excel. I don't want to have to do a percentage equation in the spreadsheet, I just want excel to take two sets of values and display the percentage in the chart. For example, I need B1 as a percentage of B2 for week 1, C1 as a percentage of C2 for week 2, etc....
Can someone please offer a suggestion for how to do this? I would really appreciate it.
Also, would it be possible to link data from other sheets in the workbook into one single chart?

I'm trying to write a formula that will automatically take a group of football (soccer) scores, compare them with a set of predictions, and then allocate points according to how close the predictions are to the actual scores.

E.g.
Manchester United 3 - 0 Arsenal
Prediction: 4 - 1
Points: 1

I've found a formula online that works for most scores; the correct score (e.g. 3 - 0), a correct win (e.g. 4 - 1), and in the case of a draw (e.g Man Utd 1 - 1 Arsenal, and the prediction 2 -2), correct draw (but not the correct score). The points are as follows: Correct draw (Prediction = result): 4 Correct win (Prediction = result): 3 Correct win, incorrect score (Winner correct, score not): 1 Correct draw, incorrect sco 1

The formula I found online for all but the correct draw is: =IF(A3&B3=C3&D3),3,IF(AND(A3=B3,C3=D3),1,IF(AND(A3>B3,C3>D3),1,IF(AND(A3<B3,C3<D3),1,0)))))

Could someone help me work out how I can write a formula to add before the above that will check the contents of four cells (the home score, away score, home prediction, away prediction), and if the number in all 4 cells are the same, allocate 4 points? I've tried using averages, but some combinations would void this. I've also used the SUM function, but the same happens, as with MULTIPLYING.

Something like =IF(A3:D3) are equal, 4,0

Below are a few examples of what I mean:
(Result) (Prediction) (Points)
A B C D E
3 - 3 3 - 3 4
2 - 1 3 - 1 1
1 - 0 1 - 0 3
3 - 3 2 - 2 1

Apologies in advance if I haven't explained this clearly enough.

Thanks

Will

I was wondering if anyone could help me out please?!?!

I need to have a cell on Sheet2 display the TEXT from a cell on Sheet1, is his possible??

Example:

Sheet1, Cell A1 contains a clients name and I would like to have Sheet2, Sheet3, Sheet4 etc... Display that clients name in a cell of my choosing (could be a different cell on each Sheet) automatically after entering it once on Sheet1, cell A1.

I thought this was possible but I can't seem to figure it out. I haven't done any real Excel work in quite a long time but I thought I had done this before a long time ago!! Any help would be GREATLY appreciated!! Thanks in advance...

P.S. If I use autosum to do this it just displays the number 0, obviously, since it is trying to add numbers...

I uploaded a copy of the spreadsheet, What I would like to happen is have the text from Sheet1,D4 automatically be placed in Sheet2,A1 and Sheet3, B2. Hope this helps

-Aric

Hi all,

I have a dillemma here,

I have to create a schedule which incorporates lunches automatically (either half hour or 1-hour lunches, depending on the circumstances).

The schedule only has time in and time out, but I need excel to automatically deduct the lunch break depending on the circumstance:

If you worked less than 6 hours = no lunch
If you worked more than 6 hours, but less than or equal to 8 hours = 0.5 hour lunch
If you worked more than 8 hours = 1 hour lunch

I am assuming the formula for this will be really long, but I have looked online everywhere and have not found ONE formula for it. I can't put lunch breaks seperately, so all I have to work with is Time in/out.

Also, I wouldn't be able to use military time, so I don't know how excel can assume that time in is in the morning, and time out is in teh evening and/or half-day.

If someone can help it would be greatlyyyy appreciated

Good afternoon,

Is there a way to enter a colon into a standard number to create a value that can be formatted into a 24 hour time value ?

eg a time is listed as 1345 with a general number format, and I want it returned as 13:45 witha custom format of hh:mm.

Other than creating a table and using a vlookup function, I am hoping there is a better way?

Darren

Entering time values in custom format [h]:mm:ss
Cells accept hours over 23,
Adding cells in column returns correct total time.
Have not found a way to multiply these cells by a $ hourly rate.
So use HOUR(cell ref) and MINUTE(cell ref) to capture values in referenced
cell - then use these values to calculate total payment for $rate per hour.
However, the HOUR(cell ref) formula returns the hours in excess of 24 when
the cell contains an hour value in excess of 23 (ie 27 hours returns 3).

Sorry for the question. Normally I find answers to my excel questions by going through the help tab or by searching on Google. However, I don't even know what question to ask on this one!?!

Basically I have created a spreadsheet with several columns, but I have one column that lists the shirt size (YS, YM, YL, AS, AM, AL, XL, 2X, 3X) of each person. Is there a formula that I can create that will tabulate the number of sizes (i.e. AS=2, AM=7, etc.)?

In previous years I made a column for each size, and simply placed a "1" in the correct column, and had excel just add the 1's from each column. However, that takes more time and space. I was hoping to streamline it this time around.

Thanks for taking the time to read this post. Any help would be appreciated! Thanks, doug

Is there an Excel guru that can help with this - its related to "drop down menus"


I have 2 colombs of data.

AT the bottom of the first, I have created a drop down menu using the "data validation" feature in excel.

At the bottom of the second colomb, I have used an "IF" function that returns a result, which depends on what value is chosen from the drop down menu in colomb 1

The problem I have is that I want the TRUE result from the IF function to be another drop down menu, being the data in colomb 2.


How do you write an IF function where the TRUE result is a drop down menu??
I tried to create a drop down menu of colomb2 elsewhere in the spread sheet, and used that cells location as the TRUE value, but this didn't work either...

ANy suggestions??