Can you explain what you are wanting to learn about your team through these measurements? That will guide the suggestions of what information to look at.
Also, you might consider that you may already know the answers to some of the some of the questions. If you are observing the team at work, you should have an idea of how they are performing without using a number to represent that.
We are using Ericsson Fault Slip Through Measurement Process (googleable) adopted for our needs. Quite valuable process which can show gaps in test phases and which gives tools to work on these weak areas.
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