Drivers Max Chilton and Luiz Razia completed four days of running at the Spanish circuit.
"We leave Jerez today feeling very encouraged with the understanding we have achieved of the MR02 and the progress we have made gathering data to feed back into the development cycle," said Booth.
"The week has not been without its frustrations, but that’s all part and parcel of pre-season testing and we are naturally keen to find any issues with the package early so we can iron them out for the next two tests and the season."
Booth is also positive about his driver line-up for 2013.
"Both Luiz [Razia] and Max [Chilton] have performed very well and even at this early stage we can see that we are in for an exciting season as they reveal even more of their own potential. Importantly, they are working well ‘together’ which will be key to extracting the maximum from team and car this season."
Booth also believes Marussia is in a much better position compared to 2012.
"Perhaps the most satisfying thing about this week’s test is the fact that we are in completely different shape to how we were this time last year. Heading into Australia we had just 100kms of mileage to our name, whereas we leave Jerez tonight having achieved almost 1000kms of running and a good deal of data for the engineers to pore over next week."
Razia drove the car on the final day of running and is encouraged by the potential of the MR02
"It is unfortunate that we didn’t get the smooth day of running we hoped for, but we have to be happy to have completed most of our programme with the MR02 this week," he said.
"What is good is that there is a lot of potential and we can see this very clearly. I’m very excited about the next two tests and I expect to see us making good steps forward," he added.