this is a rough estimate vs this is a rough estimation

Both phrases are correct, but they are used in slightly different contexts. 'This is a rough estimate' is commonly used when referring to a rough calculation or approximation, while 'This is a rough estimation' is less common but still valid, especially when referring to the act of estimating something.

Last updated: March 22, 2024 • 3978 views

this is a rough estimate

This phrase is correct and commonly used in English.

This phrase is used to indicate that a particular number or value is an approximate or rough calculation.

Examples:

This is a rough estimate of the cost of the project.
The time required for the task is just a rough estimate.
The population of the city is a rough estimate.
The weight of the package is a rough estimate.
The budget for the event is a rough estimate.

Show examples from the web [+]

This is a policy based on rough estimates and founded on pure observation.
On a rough estimate, I would say priceless.
At a rough estimate there are at present about 18 Directives that farmers have to comply with in order not to have their income subsidies cut.
You may say that it is not possible, but I think you could at least give a rough estimate.
I would therefore suggest that at the end of European summits, the political conclusions should be published, alongside a rough estimate of the financial implications.
Over here, give a rough estimate of what was in your purse.
Virginia authorities aren't being very cooperative, but it appears a rough estimate of 200 British Muslims have been picked up across state.
So if Marty can I.D. the plant, he can probably give us a rough estimate as to when they were buried.
The Authority can therefore only come to a rough estimate of the market value of the land.
Can the Commission provide a rough estimate of the impact such a proposal is likely to have on the following: 1.
The figures for administration (heading 5) agreed in Copenhagen are only based on a rough estimate of the possible needs by the Commission and therefore require further evaluation by Parliament and also by the other institutions.
If you had been better informed, you would have known that your description applies to only approximately 20% of Danes who voted 'no', and then only on a rough estimate.
A rough estimate... $500 times 64 gives us $34000 per week.
Light shaded boxes: Provision of data is mandatory, but rough estimates are acceptable.
All the official data on wolves are rough estimates.
Rough estimates suggest that every three days a patient dies because of a shortage of donors.
They're rough estimates, really.
Rough estimate: 20 to 25 pages.
In spite of this being one of the main arguments for the notified scheme, the Swedish authorities were only able to provide a rough estimate of how many of the 2000 operating licensed fishermen undertake fishing trips which involve spending the night away from home.
According to a rough estimate by the Eurosystem at the beginning of 2001, about one-third (i.e. approximately Euros 2.1 trillion) of all eligible collateral was held by credit institutions in the euro area.

Alternatives:

this is an approximate calculation
this is a ballpark figure
this is a rough guess
this is a rough calculation
this is a rough approximation

this is a rough estimation

This phrase is correct but less commonly used than 'rough estimate'.

This phrase is used to indicate that a particular calculation or judgment is approximate or rough.

Examples:

This is a rough estimation of the time needed for the project.
The budget for the event is a rough estimation.
The population growth is a rough estimation.
The weight of the package is a rough estimation.
The cost of the repair is a rough estimation.

Show examples from the web [+]

Can the Commission provide any rough estimation?
Where even a rough estimation of the population size cannot be made, enter the population type (e.g. permanent) and enter in the 'data quality' field the value DD (data deficient).
It is therefore more useful to look at a more accurate estimation of the probability of a scenario leading to the highest risk than to add up rough estimations of probabilities of all sorts of scenarios.
Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation).
Since the aid amounts envisaged were based only on rough estimations the authorising decisions underlined that the Commission would ensure that the yards in the new Länder would only receive the aid necessary to restructure.
Following on from your answer to Mr Rübig's question, do you not also believe that we are yet again seeing how urgently necessary it is that we should have common European standards rather than always arriving at decommissioning dates by a process of rough estimation?
Gentlemen, this is a rough design of our ship.
This is a rough composite, but you get the idea.
This is a rough moment for me.
This is a rough time for Sam Crow.
This is a rough level of detail.
This is a rough time of year for her.
I know this is a rough time for you, But we're going to do everything in our power to save your baby.
Take off your belt because this is a rough ride.
Hmm. Okay, so just keep in mind that this is a rough cut.
Now, this is a rough cut, so be gentle.
This is a rough draft, 'cause I'd like to take another pass at it.
All we can give them today this is a rough map of the area Tateyama on the basis of paragraphs 1 and 2 class.
This is a rough group, lady - real bunch of stabbers and grabbers.
This is a rough, primitive but correct measure showing that we are in fact reducing the gap between the decisions on commitment and the actual implementation in terms of spending per year.

Alternatives:

this is a rough estimate
this is an approximate judgment
this is a rough calculation
this is a rough guess
this is a ballpark figure

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this is a rough estimate vs this is a rough estimation