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#1 2006-05-12 02:03:42

Lyndamurphy
Novice

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Estimate

I know this sounds stupid but I have forgotten how to calculate estimated numbers.

I have a monthly total and want to estimate over 3 months

The formula I have used is divided 3 months by the Total months figures

example

month total of 85/3 = 28.3

Is this correct

Many thanks

#2 2006-05-12 02:09:16

Patrick
Real Member
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Re: Estimate

So is the sum of the three months totals 85 (for example 20+30+35), and you wonna find the average total per month? If that's what you want to do, then yes.. This should be in the help me section btw..


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#3 2006-05-12 07:50:09

MathsIsFun
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Re: Estimate

We aren't entirely clear on your question, but I will answer this line:

Lyndamurphy wrote:

I have a monthly total and want to estimate over 3 months

If you have just one month and want to estimate for 3 months, the easiest way is to multiply by 3.

Example: April=60, so April, May and June together can be estimated to be 60×3=180

More accurately you would consider the number of days in each month. Since April has 30, May has 31, and June has 30, you would calculate as follows: Daily Average in April = 60/30 = 2, so estimate for the three months = 2×(30+31+30) = 182


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

#4 2006-05-12 13:53:52

George,Y
Super Member

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Re: Estimate

yes the formula you use is correct
for
85/3    +85/3    +85/3 =    85
1st mon 2nd mon 3rd mon 3months altogether


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