Solved

how to calculate average speed per kilometer in xls with excel time format

Posted on 2011-09-12
9
982 Views
Last Modified: 2012-05-12
with what formula will i get the correct value for the average speed in the yellow coloured cell?
0
Comment
Question by:stmoritz
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
9 Comments
 
LVL 3

Expert Comment

by:exceter
ID: 36521527
AVG() not working for you ?
0
 

Author Comment

by:stmoritz
ID: 36521587
i have no clue to use average for this, as it is not an average between a similar type of data or numbers i need.
0
 

Author Comment

by:stmoritz
ID: 36521600
in decimals 15/17.8333*60   50.467km/h
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 83

Expert Comment

by:Dave Baldwin
ID: 36521604
The basic formula for an average is to sum a list of entries and divide by the number of entries.  ??
0
 

Author Comment

by:stmoritz
ID: 36521610
not in this case
0
 
LVL 33

Accepted Solution

by:
Rob Henson earned 250 total points
ID: 36521646
What data do you have? A sample workbook would be good.

I assume you have Distance and Time take. If so the formula would be:

=(60/(C3*1440))*B3

Where:
C3 = time taken (in true time format)
1440 = Minutes in one day, multiplied by time formta converts minutes to decimal format
B3 = Distance

So as an example:
5 Km in 10 minutes - mental arithmetic says 10 minutes for 5 km therefore multiply by 60/10 to work out how far in an hour = 30

=(60/(00:10*1440))*5 = 30 KPH

If you then have multiple lines for which you want the average, use the AVERAGE function with the range of speeds.

Thanks
Rob H
0
 
LVL 33

Expert Comment

by:Rob Henson
ID: 36521661
By range of speeds, I mean cell range containing multiple speeds.

However, you might want effectively a weighted average.

See example below:

Dist      Time      Speed (using above formula)
5      00:10      30
6      00:20      18
8      00:15      32
12      00:10      72

            38  Average of 4 lines above

31      00:55      33.81818182
Sum of four lines and then Speed using above formula.

The second option gives a different answer. In theory the second answer is more accurate for the whole, ie if this were one journey broken down into four steps. If it were 4 journeys done by 4 different people, then the 38 is more accurate because the data is not directly related as such.

Thanks
Rob H
0
 
LVL 50

Expert Comment

by:barry houdini
ID: 36521691
You could simplify this, Rob

=(60/(C3*1440))*B3

I'd use

=B3/C3/24

regards, barry
0
 

Author Closing Comment

by:stmoritz
ID: 36521700
sorry, i forgot to upload a sample sheet, but th is exactly what i've been looking for and it works prfectly! thanks to everybody!
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A little background as to how I came to I design this code: Around 5 years ago I designed an add-in that formatted Excel files to a corporate standard, applying different cell colours and font type depending on whether the cells contained inputs,…
Improved? Move/Copy Add-in Replacement - How to avoid the annoying, “A formula or sheet you want to move or copy contains the name XXX, which already exists on the destination worksheet.” David Miller (dlmille)  It was one of those days… I wa…
The viewer will learn how to use the =DISCRINV command to create a discrete random variable, use this command to model a set of probabilities and outcomes in a Monte Carlo simulation, and learn how to find the standard deviation of a set of probabil…
The viewer will learn how to create two correlated normally distributed random variables in Excel, use a normal distribution to simulate the return on different levels of investment in each of the two funds over a period of ten years, and, create a …

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question